# SleepCriteria

> Sleep guides: mattresses by type and firmness, pillows by sleep position, bedding, toppers, cooling products, sleep trackers, white noise machines and bedroom setups for better rest.

SleepCriteria publishes sleep products reviews, buying guides and reader discount codes. Every review states who the product suits, the current price from the brand's own store, and any active reader code.

## Key pages
- [Buying guides](https://sleepcriteria.com/guides): how to choose
- [Glossary](https://sleepcriteria.com/glossary): sleep products terms defined
- [Work with us](https://sleepcriteria.com/work-with-us): how brands partner with SleepCriteria for reviews and reader codes
- [How we test](https://sleepcriteria.com/testing-methodology)

## Topics
- [Mattresses](https://sleepcriteria.com/category/mattresses): Mattresses by type and sleep position: memory foam, hybrid, latex and innerspring, plus firmness and bed-in-a-box buying.
- [Pillows](https://sleepcriteria.com/category/pillows): Pillows for side, back and stomach sleepers: memory foam, latex, down and alternative, buckwheat and adjustable fills.
- [Cooling](https://sleepcriteria.com/category/cooling): Cooling mattress pads and systems, breathable bedding and setups for hot sleepers.

## Buying guides
- [Choosing a Mattress by Sleep Position and Body Weight](https://sleepcriteria.com/guides/best-mattress-type-by-sleep-position): Side sleepers usually need a softer to medium mattress that lets shoulders and hips sink in. Back sleepers tend to do best on medium to medium-firm, which supports the lower back. Stomach sleepers usually need firmer support to keep hips from sagging. Heavier sleepers feel any mattress as softer and benefit from hybrids with strong coils; lighter sleepers feel mattresses as firmer.
- [How to Choose a Pillow by Sleep Position](https://sleepcriteria.com/guides/how-to-choose-a-pillow-by-sleep-position): Your pillow should fill the gap between your head and the mattress so your neck stays level with your spine. Side sleepers usually need a high, firm pillow; back sleepers a medium loft; stomach sleepers a thin, soft pillow or none. Adjustable pillows with removable fill are a safe choice if you are unsure.
- [How to Sleep Cooler: Mattresses, Bedding and Room Fixes](https://sleepcriteria.com/guides/how-to-sleep-cooler): Start with the room: a cool, dark bedroom around 16 to 19°C (60 to 67°F) is often recommended. Then change what touches you: breathable cotton percale or linen sheets, a lighter duvet, and a pillow with breathable fill. If you still overheat, a hybrid or latex mattress breathes better than dense memory foam, and an active cooling pad can control the bed's temperature directly.
- [Mattress Trials and Warranties: What to Check Before You Buy](https://sleepcriteria.com/guides/mattress-trials-and-warranties-explained): A long trial is only useful if returning is easy. Check how many nights you must keep the mattress before returning, whether there is a return or pickup fee, how refunds are paid, and whether exchanges count. For warranties, look at the sag depth that counts as a defect, whether coverage is full or prorated, and what voids it, such as an unsuitable foundation or stains.

Contact: info@sleepcriteria.com