Halloween Sale - 15% OFF Sitewide (Excluded Toppers & Bundles), Code: HALLOW | 25% OFF + Free Pillow for Toppers

King Size Hybrid & Memory Foam Mattress In A Box

Shop the best luxurious king size mattress for great sleep with your families.

How Big Is A King Size Mattress?

At 76 inches wide and 80 inches long, the king size mattress is 16 inches wider than a queen and also the same size as two twin XL mattresses pushed side by side.

Mattress Sizes Dimensions (Inches) Dimensions (Centimeters)
Cal King Size Bed Dimensions 72” x 84” 183 cm x 213.5 cm
King Size Bed Dimensions 76” x 80” 193 cm x 203.5 cm
Queen Size Bed Dimensions 60” x 80” 152.5 cm x 203.5 cm
Full Size Bed Dimensions 54” x 75” 137.5 cm x 190.5 cm
Twin XL Size Bed Dimensions 38” x 80” 96.5 cm x 203.5 cm
Twin Size Bed Dimensions 38” x 75” 96.5 cm x 190.5 cm

It's Easier To Dream Bigger In Sweetnight

A king mattress is a top choice among couples looking to upgrade their queen mattress. Sweetnight King is made for ultimate sleep comfort, at an unbeatable price plus 100 nights sleep trial. Try and you'll gonna love it.

It's Easier To Dream Bigger In Sweetnight

A king mattress is a top choice among couples looking to upgrade their queen mattress. Sweetnight King is made for ultimate sleep comfort, at an unbeatable price plus 100 nights sleep trial. Try and you'll gonna love it.

king memory foam mattress  - Sweetnight

Quality Made, For Years Of Good Sleep

Delivering the good to you and the environment has been a part of Sweetnight’s DNA. That’s why we keep sourcing the best, and make better mattress and other sleep products for years of healthy sleep.

Optimal Comfort With Precise Support

The contouring layers of memory foams gently cradle to your body and weight, help relieve pressure and pain and reduce frequency of turnover at night.

king size mattress sale - Sweetnight
cheap king size mattress - Sweetnight

Designed To Isolate Movements

Individually wrapped coils absorb movement as you sleep, providing a blissful rest without unexpected interruption. Perfect for those who are prone to light sleep.

Frequently Asked Questions

Is The King Mattress Right For Me?

Which Sweetnight King Mattress Is Best For You?

cheap king mattress - Sweetnight

Island King

  • Science Sleep System
  • Motion Isolation
  • Next Generation Memory Foam
Shop
pillow top king mattress - Sweetnight

Twilight King

  • Excellent Motion Isolation
  • Innovative Support Technology
  • Superior Cooling Effect
Shop
king size mattress price - Sweetnight

Dreamland King

  • Unmatched Bounce
  • Cooling & Washable Cover
  • Enhanced Edge Support
Shop
king size foam mattress - Sweetnight

Sunkiss King

  • Excellent Motion Transfer Control
  • Soft and Firm in One Mattress
  • Optimal Cooling and Pressure Relief
Shop
king gel memory foam mattress

Breeze King

  • Relieves Pressure
  • Innovative Supports, Stays Cool
  • Lasts Long
Shop
12 inch memory foam mattress king

Whisper King

  • Upgrade Cooling Materials
  • Two sides Sleep
  • Motion Isolation Control
Shop

Which Sweetnight King Mattress Is Best For You?

BACK TO TOP