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 curates our mattress guides and oversees our rigorous mattress testing procedures. Claire has over 16 years' product review experience and is connected to a wealth of globally renowned sleep experts including mattress designers and buyers, neuroscientists, and doctors of sleep medicine. As the Managing Editor of our Sleep and Mattress Team, Claire is responsible for all mattress and sleep content published on Tom’s Guide and is our expert on Saatva, DreamCloud, and Nectar mattresses. Claire is also 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.

Latest articles by Claire Davies

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
The Sheraton hotel mattress with Sheraton bedding including sheets, pillows, and a duvet on top

What mattresses do hotels use?

By Alison Barretta last updated

These are the mattresses used by the most celebrated hotels around the world (and yes, you can buy them)

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
Five mattresses arranged in a composition on a sales-themed background with percentage sign and price tag symbols

Memorial Day mattress sales: What you need to know

By Claire Davies last updated

Memorial Day is one of the best times of year to buy a mattress for less, with discounts to rival Black Friday from many of our favorite brands.

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 Memorial Day mattress sale 2025: Today's best deals

By Ruth Jones last updated

Memorial Day is a great time to buy a Saatva mattress — here are the best deals you can still shop on the highest-scoring mattress we’ve ever tested

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’m a sleep coach — the best mattress I’ve ever tested is $400 off ahead of Memorial Day sales

By Claire Davies published

I recommend the Saatva Classic Luxury Innerspring Hybrid to most people who have trouble sleeping, and at $400 off now is the time to buy it.

Mattresses
Image shows the Helix Midnight Luxe mattress on a white wooden bedframe in a bedroom designed with blue walls, and with a blue Tom's Guide price drop sales badge overlaid on the image in the bottom right hand corner

‘Melts away tension in my back’ – save up to $775 on Helix's comfiest hotel-style mattress in new flash sale

By Claire Davies published

For today only the Helix Midnight Luxe is up to $775 off, with prices from $729 for the brand’s more affordable mattresses in a box

Mattresses
Sleep staff writer Ruth Jones lies on her stomach on the DreamCloud Luxury Hybrid mattress

DreamCloud’s flagship hotel-style mattress drops to $319 in tariff-beating flash sale – why I'd buy it now

By Claire Davies published

With an uncertain summer ahead for mattress prices, this new DreamCloud flash sale is a buy-it-now bargain

Mattresses
A woman with dark brown hair lies on her side staring at the back of a white alarm clock that shows the time as 2.30am

3 sleep hygiene tips that got me back on track after endless nights of being unable to sleep

By Claire Davies published

These aren’t quick fixes, but they could help break you out of a sleep rut

Sleep
Two delivery men unload a white mattress from their van as part of a White Glove Delivery service

Mattress White Glove Delivery: What's included and how it works

By Claire Davies last updated

We explain everything you need to know about mattress White Glove Delivery, including which brands offer it.

Mattresses
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