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The Sweetnight Blog

How to Build a Cooling Bed: The Layer-by-Layer Bedding Setup for Hot Sleepers
Cooling
Learning Center
Sep 2, 20260 comments

How to Build a Cooling Bed: The Layer-by-Layer Bedding Setup for Hot Sleepers

One cooling product rarely fixes a hot bed, because a bed traps heat in layers and each layer fails differently. Here is the order to fix them in - room,...
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When to Replace Your Pillows and Sheets (and the Signs You Are Overdue)
Learning Center
Purchase Guide
Sep 1, 20260 comments

When to Replace Your Pillows and Sheets (and the Signs You Are Overdue)

Bedding fails slowly, which is why almost everyone keeps it too long. There is no day on which a pillow stops working - it gives up a few percent of...
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What Makes a Mattress Cover Feel Cold to the Touch? (Fabric Science)
Cooling
Learning Center
Aug 31, 20260 comments

What Makes a Mattress Cover Feel Cold to the Touch? (Fabric Science)

Short answer: A fabric feels cold to the touch because it pulls heat away from your skin fast — that speed is set by the material's thermal effusivity, and it's...
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Memory foam mattress lit by warm summer light on one side and cool winter light on the other
Learning Center
Aug 30, 20260 comments

Why Your Memory Foam Feels Different in Summer vs. Winter

Short answer: Traditional memory foam is viscoelastic, which means it softens as it warms up and stiffens as it cools — so the same mattress can feel plush in a...
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Woman sitting on a bare mattress reading a printed mattress warranty document in a sunlit bedroom
Purchase Guide
Aug 29, 20260 comments

Mattress Warranty Guide: What's Covered and What Voids It

Short answer: A mattress warranty covers manufacturing defects and sagging past a stated depth — not your changing comfort preference — and the fastest way to void it is using...
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Woman sitting on the edge of a new white mattress at home during a 100-night mattress sleep trial
Purchase Guide
Aug 28, 20260 comments

How Mattress Sleep Trials Work: Making the Most of a 100-Night Test

Short answer: A mattress sleep trial lets you test a bed in your own bedroom for a set stretch of nights — often around 100 — and return it for...
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