Claire Davies

Claire Davies

Managing Editor of Sleep, Certified Sleep Science Coach

Claire is a Certified Sleep Science Coach and the Managing Editor of Sleep at Tom's Guide. She oversees our rigorous mattress testing procedures, and our buying guides and mattress rankings. Claire has over 16 years' product review experience and is connected to a wealth of globally renowned sleep experts including mattress designers, neuroscientists, and board-certified sleep doctors. She is also our in-house expert on Saatva, DreamCloud, and Nectar Sleep. Claire is certified to advise people on how to choose a mattress that suits their needs and budget, as well as helping them to create a nighttime routine and bedroom environment that helps them sleep better. Previously, Claire reported on sleep and wellness tech for T3 and TechRadar.

Latest articles by Claire Davies

The Saatva Classic luxury innerspring hybrid is the best mattress we've tested, scoring 4.8 out of 5 in our seven robust data-led lab tests and value for money analysis. Here it's photographed on a white wooden bed frame in our blue coloured sleep product testing lab

The Saatva Classic took my sleep from zero to hero, but even I admit this isn’t the right mattress for everybody

By Claire Davies published

There’s no such thing as the perfect mattress, but the Saatva Classic comes close

Mattresses
Tom's Guide Sleep Concierge team image shows two of our mattress testers sitting on a luxury hybrid mattress in our sleep product testing lab

Our Cyber Monday Sleep Concierge service is live — get personalized mattress and pillow recommendations direct from our experts

By Claire Davies published

Need a new mattress, pillow or bedding set but unsure where to start? Answer these six simple questions and our Sleep Concierge team will send you recommendations unique to you

Mattresses
The Saatva Classic luxury innerspring hybrid is the best mattress we've tested, scoring 4.8 out of 5 in our seven robust data-led lab tests and value for money analysis. Here it's photographed on a white wooden bed frame in our blue coloured sleep product testing lab

Tom’s Guide Sleep Awards 2025: Best Mattress of The Year

By Claire Davies published

The Saatva Classic luxury innerspring hybrid mattress offers such exceptional support and comfort for most sleepers, it ran (not walked) home with our main award this year

Mattresses
Two women sitting on the Siena Signature Memory Foam mattress with a Tom's Guide Black Friday Mattress Deals badge overlaid

3 reasons to buy a mattress in this weekend's sales — don't wait for Black Friday

By Nicola Appleton last updated

Wait for Black Friday and you'll pay the same price for your mattress and risk having to wait longer for it if it isn't out of stock. We’re calling it — now's the time to buy.

Mattresses
A woman peacefully asleep on a new mattress

A good mattress makes a big difference to how well you sleep — here's why

By Claire Davies last updated

Your mattress has the biggest impact on how comfy (or not) you feel in bed, how quickly you fall asleep, how often you wake up during the night, and how refreshed you feel in the morning

Mattresses
The Saatva Classic mattress photographed in our Sleep Product Testing Lab. Image clearly shows the Euro pillow top of the mattress, plus the luxurious gold edging of this luxury innerspring hybrid.

Saatva Classic mattress review: Knock-out comfort and a luxury hotel feel

By Claire Davies last updated

Editor's Choice

Saatva’s flagship mattress is still the best option for most sleepers in 2025, but there’s one group of people who should give it a major swerve

Mattresses
Image is split into four squares, with each square showing a different aspect of our mattress testing process. In the top left hand corner one of our mattress writers performs an effective sleep space test on the DreamCloud Classic mattress. In the top right hand corner you can see our pressure relief weighted indentation test in process, where we are using a standardized stack of weights to measure how much the mattress indents (how well it contours) and how quickly it recovers (how responsive it is). In the bottom left hand corner another our of mattress testers lies on her side on the Saatva Classic mattress during a pressure relief test, with a digital laser projecting a straight line onto her back so we can assess how well the mattress supports spinal alignment. In the bottom right hand corner, one of our mattress testers lies on a hybrid mattress during a thermal regulation test. In the image you can see we're using a thermal imaging camera to measure how much heat the mattress absorbs and how quickly it dissipates that heat.

How we test mattresses

By Claire Davies published

A complete guide to our new methodology and scoring system

Mattresses
The image shows a white mattress with a navy blue trim placed on a dark blue bed foundation in a white bedroom

WinkBed mattress review: Phenomenal support for those with back pain

By Jennifer Nelson last updated

Editor's Choice

We reviewed the WinkBed mattress to see if this handcrafted hybrid mattress, with customizable support for those with back pain, is indeed a worthy rival to the top-rated Saatva Classic.

Mattresses
Our mattress tester wearing black silk pyjamas laying on her back on the Birch Elite mattress on wooden bedframe in warm lit bedroom with bedside plant, chair, unit, lamp and checkred rug

Don't ignore the 9 key signs that it’s time to buy a new mattress

By Claire Davies last updated

Is it time to replace your mattress? Here are nine telltale signs you need a new one — and three that you just need a new bed topper

Mattresses
A member of our sleep team lies on her side on the Nolah Original Mattress on a bed frame in a bedroom

What are mattress trials and how do they work?

By Claire Davies last updated

Many mattress brands talk about their sleep trial periods, but what are they and how do they work? We have answers.

Mattresses
A woman sits cross-legged on a bed with her eyes closed and her fingers held in a meditative position.

The 'perfect, portable stress antidote' — how to use the 4 7 8 breathing method to fall asleep fast

By Claire Davies last updated

Presented by Nectar

The 4 7 8 sleep method involves a simple breathing technique that's surprisingly effective against anxiety, stress and bedtime worries.

Sleep
A man lying with his eyes closed in a canoe on a lake, a visualization used in the Military Sleep Method.

The Military Method promises sleep in 2 minutes — but what is it?

By Claire Davies last updated

How to use the two-minute Military Sleep Method to fall asleep fast and quieten a racing mind before bed.

Sleep
Testers inspect the newly unboxed DreamCloud Classic mattress.

Mattress jargon buster: Our expert glossary explains all the key terms you'll come across while bed shopping

By Claire Davies last updated

Confused by all the technical talk when bed shopping? Our mattress jargon buster explains all the key terms you need to know

Mattresses
A collage of mattresses available in the October Amazon Prime Big Deal Days. Top left the Beautyrest Prime Dream, top right the Zinus 8-inch Green tea Memory Foam, bottom right the Classic Homes Cool Gel Mattress, bottom left the Siena Signature Mattress. In the middle, a Tom's Guide Prime Day deals graphic

October Prime Day mattress deals 2025: Sleep better for less

By Claire Davies last updated

The October Prime Day mattress sales are over, but there's still savings to be had from DreamCloud, Nectar, Sealy, and more.

Mattresses
A collage of images, showing mattresses being tested. In the top left, two members of the Tom's Guide sleep team sit on the Saatva Classic mattress. Top right, a mattress tester lies on the Helix Midnight Luxe mattress. Bottom left, two women on box a rolled up mattress in a box. Bottom right, two women sit on the DreamCloud Hybrid Mattress. A Tom's Guide price drop deals badge in the center.

Labor Day Mattress Sales: What you need to know

By Claire Davies last updated

The Labor Day sales are an excellent time to save on a mattress — here's our complete guide to the deals and how to get better sleep for less.

Mattresses
Saatva Memorial Day sales main shows the Saatva Classic mattress on a marble background with a blue price drop deals badge overlaid on the bottom left hand corner

Saatva Labor Day sale: Best offers still live

By Claire Davies last updated

You can still save in the Saatva Labor Day mattress sales but act fast to get up to $525 of a luxury handcrafted bed.

Mattresses
The Tom's Guide Sleep Editor jumping onto a mattress that's on sale for Labor Day

I'm a mattress sales veteran — these are the 25+ best extended Labor Day deals still live this morning

By Claire Davies last updated

I'm tracking the Labor Day sleep and mattress sales — these are the best 25+ deals still live today on mattresses, bedding, pillows, sleep tech and more

Mattresses
Image shows the Saatva Classic luxury innerspring hybrid mattress on a dark blue background with gold accents, with a light blue Tom's Guide price drop sales badge overlaid in the bottom left hand corner

I'm a sleep coach — the mattress I trust to help most people sleep better is $400 off in Labor Day sales

By Claire Davies published

I've re-tested the Saatva Classic three times and recommend it to nearly all sleepers at $400 off every size in the Labor Day sales

Mattresses
The black and white Cocoon by Sealy Chill mattress placed on a purple bed frame in a bedroom with a white brick wall, two bedside cabinets and a plant

Cocoon by Sealy Chill mattress review: The most affordable cooling mattress around

By Jennifer Nelson last updated

A cooling all-foam mattress, the Cocoon by Sealy Chill won't break the bank. But does it perform? We tested it out.

Mattresses
Purple Plus mattress review: Purple Plus mattress in a bedroom

Purple Plus mattress review 2025

By Jennifer Nelson last updated

Editor's Choice

The Purple Plus mattress is a plusher take on Purple’s GelFlex Grid. We slept on it to find out what this unusual memory foam mattress is like.

Mattresses
Woman holding a bottle of Dr Teal's Calm Blend Sleep Spray for Pillows and Bed Sheets next to two white pillows on a bed she is about to spray

I’m a sleep coach — 5 cheap bedtime essentials I stock up on every Prime Day to get the best night’s rest

By Claire Davies published

Before I look at anything else in the Prime Day sale I make sure I’ve piled my basket high with these cheap yet brilliant sleep essentials

Sleep
The image shows the DreamCloud Classic Hybrid mattress on a grey bed frame with a Tom's Guide 'Price drop' badge on top

I’m a sleep coach and these 3 mattresses are worth every cent in today's 4th of July sales

By Claire Davies published

Better sleep for less is just a few clicks away thanks to these unbeatable 4th of July mattress deals

Mattresses
The Saatva Classic Luxury Innerspring Hybrid mattress photographed in a blue bedroom, with a blue Tom's Guide Price Drop image overlaid on the bottom right hand corner of the image

I test mattresses for a living — my all-time favorite is now $400 off in 4th of July sales

By Claire Davies published

The Saatva Classic is the comfiest mattress I’ve tested, and this 4th of July discount brings it back to one of its cheapest prices of the year

Mattresses
Coop Home Goods Ultra Tech Waterproof Mattress Protector on a white mattress placed on a black bedframe in front of a window overlooking a city

Coop Sleep Goods Ultra Tech Waterproof Mattress Protector review 2025

By Claire Davies last updated

Editor's Choice

The Coop Sleep Goods Ultra Tech Waterproof Mattress Protector promises 100% waterproof protection. Here's what we found out after testing it over two weeks...

Pillows & Bedding
A woman in a khaki green sleeveless top holds a white colander full of freshly washed raw spinach, a magnesium rich food that has multiple benefits to a person's health and sleep

I take magnesium for better sleep, but can a varied diet deliver the same results? I asked three dieticians

By Claire Davies published

I’m considering ditching my magnesium glycinate supplement after adding more seeds, greens and beans to my diet. Here’s why…

Sleep
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