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Sleep & Health

Can You Sleep on a Mattress Straight Away?


Getting a mattress can be a significant investment of time and money for many people. It takes time to research the product. It takes time to find a good price. It takes time to get it delivered. When it does arrive, the temptation to lay down and drift off to sleep on your new mattress is almost irresistible.

But hold on! Did you know there is actually something known as 'mattress expansion?' Yes! It applies to most mattresses, but particularly to those new modern vacuum-packed mattresses that arrive at your door straight out of the box.

You may have a few questions when you see your new mattress pristinely rolled up and plastic wrapped. Wow...Can I really sleep on this right away or what? How long do I have to wait before the word 'comfort' happens?

Can You Sleep on a Mattress Straight Away

CONTENTS

  • What Does “Mattress Expansion” Mean?
  • Can You Sleep on a New Mattress Right Away?
  • Why You Can't Sleep on a New Mattress Right Away?
  • Conclusion
  • FAQs

What Does “Mattress Expansion” Mean?

Mattress Expansion

Before we address our primary question of “Can you sleep on a new mattress straight away?”, it’s important to understand what mattress expansion is. Mattress expansion is the process through which your new mattress, which was compressed for delivery, regains its full form and dimensions. The majority of contemporary mattresses, particularly those delivered in boxes, are compressed, vacuum-sealed, and rolled tight to facilitate easier and more cost-effective transport. However, once the packaging is removed, the mattress begins to “breathe”, slowly growing to its original size. This process isn’t immediate, and depending on the mattress type, it can range from a few hours to a few days. The mattress needs this time to fully inflate and achieve its optimal comfort and support levels.

SweetNight CoolNest Ultra memory foam mattress on a gray upholstered bed in a modern bedroom #Thickness_12,14
SweetNight CoolNest Ultra 16 inch memory foam mattress on an upholstered bed in a dark wood bedroom #Thickness_16
Layer diagram of the 12 inch CoolNest Ultra mattress showing the 5-stage cooling system and 7 foam layers #Thickness_12
Layer diagram of the 14 inch CoolNest Ultra mattress showing the 5-stage cooling system and 7 foam layers #Thickness_14
Layer diagram of the 16 inch CoolNest Ultra mattress showing the 5-stage cooling system and 7 foam layers #Thickness_16
Couple asleep on the CoolNest Ultra memory foam mattress that feels up to 11 degrees cooler and 37.5 percent more cooling than the original CoolNest #Thickness_12,14
Couple asleep on the 16 inch CoolNest Ultra memory foam mattress with up to 11 degrees cooler sleep surface #Thickness_16
Split comparison of restless sleep versus waking refreshed on the CoolNest Ultra mattress with up to 20 percent longer deep sleep #Thickness_12,14
Split comparison of an ordinary mattress and the 16 inch CoolNest Ultra mattress for up to 20 percent longer deep sleep #Thickness_16
Ice cube on the CoolNest Ultra gradient cooling ice silk cover with 0.25 Q-Max value, 47 percent cooler touch and OEKO-TEX certification #Thickness_12,14,16
Close-up of AirMesh breathable memory foam with up to 6X greater breathability and CertiPUR-US certification #Thickness_12,14,16
Cutaway of the CoolNest Ultra 3D open-channel structure showing ventilated air circulation while a couple sleeps #Thickness_12,14
Couple sleeping on the 16 inch CoolNest Ultra mattress with 3D ventilated circulation releasing heat #Thickness_16
PCMflux high resilience foam close-up with hollow-pore design and temperature charts comparing 86F without PCM to 75F with PCM #Thickness_12,14,16
Side sleeper on the CoolNest Ultra mattress showing 7-zone precision support for spinal alignment and a medium plush feel #Thickness_12,14
Side sleeper on the 16 inch CoolNest Ultra mattress with 7-zone precision support endorsed by the American Chiropractic Association #Thickness_16
Overhead view of a couple on the CoolNest Ultra mattress showing motion isolation for undisturbed sleep #Thickness_12,14
Overhead view of a couple on the 16 inch CoolNest Ultra mattress absorbing movement to minimize motion transfer #Thickness_16
Couple sitting on the 16 inch CoolNest Ultra mattress with 100-night trial, 10-year warranty, ISPA, CertiPUR-US and OEKO-TEX badges #Thickness_16
Couple sitting on the CoolNest Ultra mattress with 100-night risk-free trial and 10-year limited warranty certification badges #Thickness_12,14
SweetNight CoolNest Ultra memory foam mattress on a gray upholstered bed in a modern bedroom #Thickness_12,14
SweetNight CoolNest Ultra 16 inch memory foam mattress on an upholstered bed in a dark wood bedroom #Thickness_16
Layer diagram of the 12 inch CoolNest Ultra mattress showing the 5-stage cooling system and 7 foam layers #Thickness_12
Layer diagram of the 14 inch CoolNest Ultra mattress showing the 5-stage cooling system and 7 foam layers #Thickness_14
Layer diagram of the 16 inch CoolNest Ultra mattress showing the 5-stage cooling system and 7 foam layers #Thickness_16
Couple asleep on the CoolNest Ultra memory foam mattress that feels up to 11 degrees cooler and 37.5 percent more cooling than the original CoolNest #Thickness_12,14
Couple asleep on the 16 inch CoolNest Ultra memory foam mattress with up to 11 degrees cooler sleep surface #Thickness_16
#Thickness_12,14,16
Split comparison of restless sleep versus waking refreshed on the CoolNest Ultra mattress with up to 20 percent longer deep sleep #Thickness_12,14
Split comparison of an ordinary mattress and the 16 inch CoolNest Ultra mattress for up to 20 percent longer deep sleep #Thickness_16
Ice cube on the CoolNest Ultra gradient cooling ice silk cover with 0.25 Q-Max value, 47 percent cooler touch and OEKO-TEX certification #Thickness_12,14,16
Close-up of AirMesh breathable memory foam with up to 6X greater breathability and CertiPUR-US certification #Thickness_12,14,16
Cutaway of the CoolNest Ultra 3D open-channel structure showing ventilated air circulation while a couple sleeps #Thickness_12,14
Couple sleeping on the 16 inch CoolNest Ultra mattress with 3D ventilated circulation releasing heat #Thickness_16
PCMflux high resilience foam close-up with hollow-pore design and temperature charts comparing 86F without PCM to 75F with PCM #Thickness_12,14,16
Side sleeper on the CoolNest Ultra mattress showing 7-zone precision support for spinal alignment and a medium plush feel #Thickness_12,14
Side sleeper on the 16 inch CoolNest Ultra mattress with 7-zone precision support endorsed by the American Chiropractic Association #Thickness_16
Overhead view of a couple on the CoolNest Ultra mattress showing motion isolation for undisturbed sleep #Thickness_12,14
Overhead view of a couple on the 16 inch CoolNest Ultra mattress absorbing movement to minimize motion transfer #Thickness_16
Couple sitting on the 16 inch CoolNest Ultra mattress with 100-night trial, 10-year warranty, ISPA, CertiPUR-US and OEKO-TEX badges #Thickness_16
Couple sitting on the CoolNest Ultra mattress with 100-night risk-free trial and 10-year limited warranty certification badges #Thickness_12,14

Colchón CoolNest® Ultra de Espuma Viscoelástica Refrescante

$729.99
sweetnight hybrid mattress #Thickness_14,12
hybrid mattress #Thickness_16
Woman sleeping on the CoolNest Hybrid mattress that feels up to 8 degrees cooler with instant, adaptive, sustained and ventilated cooling #Thickness_14,12
Woman sleeping on the 16 inch CoolNest Hybrid mattress with up to 8 degrees cooler sleep surface #Thickness_16
Layer diagram of the 12 inch CoolNest Hybrid mattress showing 8 cooling and support layers with Dynamic Coil technology #Thickness_12
Layer diagram of the 14 inch CoolNest Hybrid mattress showing 9 cooling and support layers with Dynamic Coil technology #Thickness_14
Layer diagram of the 16 inch CoolNest Hybrid mattress showing 9 cooling and support layers with Dynamic Coil technology #Thickness_16
Close-up of PCMflux high resilience foam with hollow-pore design and PCM phase-change temperature comparison charts #Thickness_14,12,16
Dynamic Coil technology diagram with 600 individually pocketed springs, under 15 percent motion transfer and noise under 25 dB #Thickness_14,12,16
Woman sitting on the edge of the CoolNest Hybrid mattress showing its reinforced edge support design #Thickness_14,12
Woman sitting on the edge of the 16 inch CoolNest Hybrid mattress with reinforced edge stability and expanded sleep surface #Thickness_16
Close-up of the CoolNest Hybrid cooling ice silk cover with 0.25 Q-Max value, 30 percent improved breathability and 47 percent stronger cooling #Thickness_14,12,16
Close-up of 30 percent gel-infused memory foam that absorbs heat for sustained cooling and pressure relief #Thickness_14,12,16
Woman sleeping on the CoolNest Hybrid mattress with a ventilated hybrid structure that releases heat and moisture #Thickness_14,12
Woman sleeping on the 16 inch CoolNest Hybrid mattress with breathable ice silk cover and open coil airflow #Thickness_16
Advanced dual-support foam diagram with high-density and zoned support foam for even weight distribution and spinal alignment #Thickness_14,12,16
Close-up of the CoolNest Hybrid DuoSense pillow top with cooling cover and gel-infused comfort foam layers #Thickness_14,12,16
Woman resting on the CoolNest Hybrid mattress with a medium-firm sleep feel firmness scale #Thickness_14,12
Woman resting on the 16 inch CoolNest Hybrid mattress showing its medium-firm sleep feel #Thickness_16
CertiPUR-US, ISPA, OEKO-TEX and ACA certificates for the CoolNest Hybrid mattress safety and spinal support #Thickness_14,12,16
Front view of the CoolNest Hybrid pillow top mattress on a gray upholstered bed #Thickness_14,12
Side profile of the 16 inch CoolNest Hybrid mattress showing its navy pocket coil border and quilted pillow top #Thickness_16
16 inch CoolNest Hybrid mattress with quilted pillow top on an upholstered bed in a city view bedroom #Thickness_16
Side view of the CoolNest Hybrid pillow top mattress on a gray upholstered bed frame #Thickness_14,12
sweetnight hybrid mattress #Thickness_14,12
hybrid mattress #Thickness_16
#Thickness_16,14,12
Woman sleeping on the CoolNest Hybrid mattress that feels up to 8 degrees cooler with instant, adaptive, sustained and ventilated cooling #Thickness_14,12
Woman sleeping on the 16 inch CoolNest Hybrid mattress with up to 8 degrees cooler sleep surface #Thickness_16
Layer diagram of the 12 inch CoolNest Hybrid mattress showing 8 cooling and support layers with Dynamic Coil technology #Thickness_12
Layer diagram of the 14 inch CoolNest Hybrid mattress showing 9 cooling and support layers with Dynamic Coil technology #Thickness_14
Layer diagram of the 16 inch CoolNest Hybrid mattress showing 9 cooling and support layers with Dynamic Coil technology #Thickness_16
Close-up of PCMflux high resilience foam with hollow-pore design and PCM phase-change temperature comparison charts #Thickness_14,12,16
Dynamic Coil technology diagram with 600 individually pocketed springs, under 15 percent motion transfer and noise under 25 dB #Thickness_14,12,16
Woman sitting on the edge of the CoolNest Hybrid mattress showing its reinforced edge support design #Thickness_14,12
Woman sitting on the edge of the 16 inch CoolNest Hybrid mattress with reinforced edge stability and expanded sleep surface #Thickness_16
Close-up of the CoolNest Hybrid cooling ice silk cover with 0.25 Q-Max value, 30 percent improved breathability and 47 percent stronger cooling #Thickness_14,12,16
Close-up of 30 percent gel-infused memory foam that absorbs heat for sustained cooling and pressure relief #Thickness_14,12,16
Woman sleeping on the CoolNest Hybrid mattress with a ventilated hybrid structure that releases heat and moisture #Thickness_14,12
Woman sleeping on the 16 inch CoolNest Hybrid mattress with breathable ice silk cover and open coil airflow #Thickness_16
Advanced dual-support foam diagram with high-density and zoned support foam for even weight distribution and spinal alignment #Thickness_14,12,16
Close-up of the CoolNest Hybrid DuoSense pillow top with cooling cover and gel-infused comfort foam layers #Thickness_14,12,16
Woman resting on the CoolNest Hybrid mattress with a medium-firm sleep feel firmness scale #Thickness_14,12
Woman resting on the 16 inch CoolNest Hybrid mattress showing its medium-firm sleep feel #Thickness_16
CertiPUR-US, ISPA, OEKO-TEX and ACA certificates for the CoolNest Hybrid mattress safety and spinal support #Thickness_14,12,16
Front view of the CoolNest Hybrid pillow top mattress on a gray upholstered bed #Thickness_14,12
Side profile of the 16 inch CoolNest Hybrid mattress showing its navy pocket coil border and quilted pillow top #Thickness_16
16 inch CoolNest Hybrid mattress with quilted pillow top on an upholstered bed in a city view bedroom #Thickness_16
Side view of the CoolNest Hybrid pillow top mattress on a gray upholstered bed frame #Thickness_14,12

Colchón híbrido CoolNest®

$499.99
SweetNight CoolNest Pro memory foam mattress on a gray bed in a navy blue bedroom #Thickness_12,14,16
Layer diagram of the 12 inch CoolNest Pro mattress showing the upgraded 7-layer cooling and support system #Thickness_12
Layer diagram of the 14 inch CoolNest Pro mattress showing the upgraded 7-layer cooling and support system #Thickness_14
Layer diagram of the 16 inch CoolNest Pro mattress showing the upgraded 7-layer cooling and support system #Thickness_16
Woman sleeping on the CoolNest Pro memory foam mattress with four-stage cooling, full-depth ventilation and 7-zone support #Thickness_12,14,16
Close-up of the CoolNest Pro cooling ice silk cover with 0.23 Q-Max value, 35 percent cooler feel and 20 percent more breathability #Thickness_12,14,16
Layered foam corner showing the CoolNest Pro full-depth ventilation design with over 700 vertical ventilation holes per layer #Thickness_12,14,16
Side sleeper on the CoolNest Pro mattress showing upgraded 7-zone precision support and full-body pressure relief #Thickness_12,14,16
Close-up of perforated gel-infused memory foam with over 700 ventilation holes and 30 percent gel infusion for sustained cooling #Thickness_12,14,16
PCMflux high resilience foam close-up with hollow-pore design and PCM phase-change temperature comparison charts #Thickness_12,14,16
Woman reading on the CoolNest Pro memory foam mattress with a medium sleep feel firmness scale #Thickness_12,14,16
Couple sitting on the CoolNest Pro mattress with ACA, ISPA, CertiPUR-US and OEKO-TEX safety certification badges #Thickness_12,14,16
Close-up of the CoolNest Pro mattress corner showing the navy and gray cover with SweetNight logo #Thickness_12,14,16
Front view of the CoolNest Pro memory foam mattress with gray bedding in a navy blue bedroom #Thickness_12,14,16
Angled view of the CoolNest Pro memory foam mattress on a gray foundation in a navy bedroom #Thickness_12,14,16
CoolNest Pro memory foam mattress on a gray foundation beside a floor lamp in a modern bedroom #Thickness_12,14,16
Side profile of the CoolNest Pro memory foam mattress showing its navy and gray cover #Thickness_12,14,16
SweetNight CoolNest Pro memory foam mattress product view on a white background #Thickness_12,14,16
SweetNight CoolNest Pro memory foam mattress on a gray bed in a navy blue bedroom #Thickness_12,14,16
Layer diagram of the 12 inch CoolNest Pro mattress showing the upgraded 7-layer cooling and support system #Thickness_12
Layer diagram of the 14 inch CoolNest Pro mattress showing the upgraded 7-layer cooling and support system #Thickness_14
Layer diagram of the 16 inch CoolNest Pro mattress showing the upgraded 7-layer cooling and support system #Thickness_16
Woman sleeping on the CoolNest Pro memory foam mattress with four-stage cooling, full-depth ventilation and 7-zone support #Thickness_12,14,16
#Thickness_12,14,16
Close-up of the CoolNest Pro cooling ice silk cover with 0.23 Q-Max value, 35 percent cooler feel and 20 percent more breathability #Thickness_12,14,16
Layered foam corner showing the CoolNest Pro full-depth ventilation design with over 700 vertical ventilation holes per layer #Thickness_12,14,16
Side sleeper on the CoolNest Pro mattress showing upgraded 7-zone precision support and full-body pressure relief #Thickness_12,14,16
Close-up of perforated gel-infused memory foam with over 700 ventilation holes and 30 percent gel infusion for sustained cooling #Thickness_12,14,16
PCMflux high resilience foam close-up with hollow-pore design and PCM phase-change temperature comparison charts #Thickness_12,14,16
Woman reading on the CoolNest Pro memory foam mattress with a medium sleep feel firmness scale #Thickness_12,14,16
Couple sitting on the CoolNest Pro mattress with ACA, ISPA, CertiPUR-US and OEKO-TEX safety certification badges #Thickness_12,14,16
Close-up of the CoolNest Pro mattress corner showing the navy and gray cover with SweetNight logo #Thickness_12,14,16
Front view of the CoolNest Pro memory foam mattress with gray bedding in a navy blue bedroom #Thickness_12,14,16
Angled view of the CoolNest Pro memory foam mattress on a gray foundation in a navy bedroom #Thickness_12,14,16
CoolNest Pro memory foam mattress on a gray foundation beside a floor lamp in a modern bedroom #Thickness_12,14,16
Side profile of the CoolNest Pro memory foam mattress showing its navy and gray cover #Thickness_12,14,16
SweetNight CoolNest Pro memory foam mattress product view on a white background #Thickness_12,14,16

Colchón CoolNest® Pro de Espuma Viscoelástica Refrescante

$529.99
SweetNight CoolNest memory foam mattress on a gray upholstered bed in a light blue bedroom
Exclusive CoolNest system diagram showing the 7 layers of the 14 inch CoolNest memory foam mattress
Woman sleeping on the CoolNest memory foam mattress with 8 degrees cooler high-efficiency cooling
Close-up of the CoolNest 3D knitted cooling nylon cover, OEKO-TEX certified and 35 percent more breathable
Close-up of PCMflux high resilience foam with 3X breathability for better cooling, CertiPUR-US certified
Side sleeper on the CoolNest mattress showing 5-zone ergo balanced support endorsed by the American Chiropractic Association
Hand pressing into the CoolNest mattress surface to show its medium sleep feel
Couple resting on the CoolNest mattress with ACA, ISPA, CertiPUR-US and OEKO-TEX quality certification badges
Close-up of the CoolNest memory foam mattress corner with navy border and SweetNight logo
Angled view of the CoolNest memory foam mattress on a gray platform bed in a blue bedroom
SweetNight CoolNest memory foam mattress on a gray upholstered bed in a light blue bedroom
Exclusive CoolNest system diagram showing the 7 layers of the 14 inch CoolNest memory foam mattress
Woman sleeping on the CoolNest memory foam mattress with 8 degrees cooler high-efficiency cooling
Colchón CoolNest® de Espuma Viscoelástica Refrescante
Close-up of the CoolNest 3D knitted cooling nylon cover, OEKO-TEX certified and 35 percent more breathable
Close-up of PCMflux high resilience foam with 3X breathability for better cooling, CertiPUR-US certified
Side sleeper on the CoolNest mattress showing 5-zone ergo balanced support endorsed by the American Chiropractic Association
Hand pressing into the CoolNest mattress surface to show its medium sleep feel
Couple resting on the CoolNest mattress with ACA, ISPA, CertiPUR-US and OEKO-TEX quality certification badges
Close-up of the CoolNest memory foam mattress corner with navy border and SweetNight logo
Angled view of the CoolNest memory foam mattress on a gray platform bed in a blue bedroom

Colchón CoolNest® de Espuma Viscoelástica Refrescante

$299.99

Can You Sleep on a New Mattress Right Away?

Can I Sleep on a New Mattress Right Away

OK, after comprehending what mattress expansion is, let’s turn back to the “Can you sleep on a new mattress right away?" question. Technically, yes, of course, you can sleep on a new mattress immediately, as most mattress manufacturers state that the mattress is definitely safe to sleep on the first night. However, don’t expect to have the most comfortable sleep of your life, though. The mattress won’t provide its full degree of comfort and support because it is still expanding. Some regions could feel a little firmer or softer than others. Generally speaking, sleeping on your mattress straight away won’t damage its internal structure, although it might not provide the dreamlike comfort you envisioned for your first night.

So in our opinion (and experience), it probably makes sense not to sleep on the mattress right away.

Why You Can't Sleep on a New Mattress Right Away?

First of all, a new mattress needs time to its original dimensions. You have hauled away your old, lumpy mattress, having spent a lot of time and effort choosing a new mattress, and imagined time after time how wonderful it will be to sleep on this new mattress. Now the only place that you can sleep would be the floor and the sofa during this period. Hurts, doesn't it?

The new mattress is rolled and compressed for convenient delivery to your home. The spec on the mattress label or the product manual that comes with the mattress provides a detailed description of how much time your mattress will be needed for expansion. As we mentioned before, this can range from brands to materials. Some mattresses take 24 hours, and some mattresses require up to 72 hours for their usable shapes. Within 24 hours of being opened, most mattresses in boxes attain roughly 90% of their full expansion, while the manufacturers continue to say no for their reasons. During this period, sleeping on the new mattress would not feel like sleeping on a cloud if the mattress wasn’t fully expanded. For your better sleeping experience, let’s face it.

Also, off-gassing is another big issue, which refers to the smell you might notice when you unbox it. Volatile organic compounds (VOCs), which are used in the manufacturing process, are released in this manner. Although the majority of these gases are safe, some people may find the scent disagreeable or develop mild allergies. Again, for the best purchase and sleeping experience, waiting for at least 24 hours would be the thumb rule.

How to Expedite Mattress Expansion

Now that you can breathe a sigh of relief knowing you can sleep on a mattress while it’s expanding, it’s also essential to the process of mattress expansion. a huge mattress was compressed by a specific machine and sealed in a plastic bag with heat to ensure the mattress would not grow and inflate before unboxing. When the packaging is opened, air starts to leak back into these layers, raising and expanding the mattress. The amount of time needed for various mattress types to completely expand varies. For example, memory foam mattresses typically require more time than innerspring or hybrid mattresses. It is a good idea always refer to the manufacturer’s specific instructions.

a bit of heat can help expedite the mattress expansion

And yes, there are a few things you can do to help expedite the mattress expansion process. First, remove the mattress from its packaging and allow it to fully expand in a well-ventilated room. You can also gently massage the mattress to help distribute the filling and encourage expansion. Although we thought the effect would be close to zero, it is still worth a try. Additionally, applying a bit of heat to the room, such as using a space heater or opening windows to let in sunlight, can help speed up the process. Avoid placing any heavy objects on it during this time.

How to Speed up Mattress Off-Gassing

How to Speed up Mattress Off-Gassing

The CertiPUR-US certification has set strict guidelines for producing these mattresses, so purchasing a CertiPUR-US-certified mattress has almost halfway done. Off-gassing is a natural process that occurs when a new mattress is unpacked from its packaging. You can help the process by ensuring that the room is well-ventilated and by removing any covers or sheets from the mattress. It's also recommended to allow the mattress to air out for several hours before using it.

Conclusion

In a nutshell, you can’t sleep on a new mattress straight away, but there won’t be any serious repercussions if you do. A brand-new mattress needs time to expand and air out. If you utilize your mattress right out of the box, the sleeping experience on this mattress would be compromised by the lack of time for full expansion. We strongly recommend that you enjoy quality sleep on a mattress that is in its best shape, and leave at least 48 hours for the mattress to breathe.

CAN YOU SLEEP ON A MATTRESS STRAIGHT AWAY?

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