Black FridayBlack Friday codes for 1 sleep products brands
MattressesHybrid mattresses · Foam mattresses · Latex & organic · By sleep position
PillowsPillows by position · Pillow fills
BeddingSheets · Duvets & blankets
Toppers & basesMattress toppers · Frames & adjustable bases
CoolingCooling systems · Hot sleepers
Sleep techSleep trackers · Sound & light
Sleep accessoriesMasks & earplugs · Snoring products
Bedroom & habitsRoom setup · Couples & kids
Mattresses · Pillows · Bedding · Sleep tech

Sleep betteron a bed madefor how you sleep.

Buying guides for mattresses, pillows, bedding, toppers and sleep technology, starting with your sleep position, your body and whether you run hot, then the materials and trial terms that matter.

30 buying guidesUpdated November 2026
Quick answers

Sleep questions, answered

Browse the glossary →
Does an air system need a special mattress?

Some product makers state that their systems fit many mattress types, but verify the exact bed frame, size and installation requirements.

Read: Air vs Water Bed Cooling Systems →
Are all bed-cooling systems water based?

No. Product designs vary; check the product description and manual.

Read: Bed Cooling System Buying Checklist →
Do blackout curtains block all light?

Product descriptions vary. Check the maker’s stated coverage and installation requirements.

Read: Blackout Curtains vs Sleep Masks →
What are the main CPAP mask designs?

Common designs include nasal pillows, nasal masks or cradles, and full-face masks. Product names differ by manufacturer.

Read: CPAP Mask Types →
Should I measure the mattress with a topper?

Yes. Include every layer that will sit beneath the fitted sheet.

Read: How Deep Should Fitted Sheet Pockets Be? A Measuring Checklist →
Is memory foam the only foam in a mattress?

No. A mattress can combine memory foam, polyfoam, latex or other layers. Check the maker’s material breakdown.

Read: Foam Mattress Types →
Why trust SleepCriteria

Sleep position first

How we test
01Construction and terms

Every mattress guide lists layers, materials, trial length and warranty terms from the brand, so you can compare like with like.

02A clear verdict

Each guide says who the product suits, who should look elsewhere, and what to check before you buy.

03No paid placements

Brands cannot buy a review or a spot on a list. Partner codes save you money; they never decide what we recommend.

04Kept current

Prices are dated, codes are updated across the site at once, and pages are revised when a product, standard or rule changes.

Reader codes

Codes that work at checkout

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moonbird
€10 off

moonbird code details →