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

A Simba mattress bundle with a Tom's Guide 'Act Fast' badge

Simba mattress sales and deals for December 2025: free bedding bundles with selected mattresses

By Becks Shepherd last updated

Get a free bedding bundle including pillows, duvets and protectors with hybrid Simba mattresses in December sales.

Mattresses
A close up of the end of a Nectar Classic Memory Foam Mattress on a bed frame, a Tom's Guide price drop deals graphic (right)

The best Nectar mattress sales for December 2025: Memory foam and hybrid bed-in-a-box deals from just $379 this month

By Claire Davies last updated

Nectar's December mattress sales have dropped. Here are the best discounts on these popular memory foam and hybrid beds...

Mattresses
Two Tom's Guide mattress testers sat on the DreamCloud mattress

DreamCloud mattress sales for December 2025: A luxury hybrid with a bedding bundle from just $399

By Claire Davies last updated

DreamCloud's December mattress sale means you can transform your bedroom for less in time for hibernation season — with up to $599 of free bedding included with your new mattress

Mattresses
Eve Premium Hybrid Mattress

The best Black Friday mattress deals of 2025: Our top sales picks for every budget

By Claire Davies last updated

Black Friday might be finished but there are still Cyber Monday deals to be had, and we've picked out the best savings

Mattresses
This image shows two of our sleep team testing mattress in the Sleep Lab, debating when's the best time to shop. On the left, Nicola Appleton sits on a Helix Midnight Luxe mattress. On the right, Ruth Jones sits on a Saatva Classic mattress, a laptop open in her lab as she checks for sales. In the top right corner is a Cyber Monday vs Black Friday mattress deals graphic

Cyber Monday vs Black Friday mattress deals: when is the best time to buy a mattress?

By Claire Davies last updated

Are the Black Friday mattress deals the best time to buy a mattress or do bigger sales arrive on Cyber Monday? We’ve analyzed past sales to find out.

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
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
Nectar mattress review: The Nectar Mattress placed on a light wooden bed frame with an orange metal suitcase at the end

Nectar Mattress review: Supportive memory foam comfort for low budgets

By Claire Davies last updated

The Nectar Memory Foam Mattress promises body-hugging, cooling comfort, but does it deliver? We tested it for three months to find out...

Mattresses
Mattress tester Becky George sits on the middle of the Emma Hybrid Airgrid mattress on a bed frame in our sleep studio, testing the edge support and comfort of the mattress

The 5 best mattresses to help you sleep better in 2025 and beyond

By Claire Davies last updated

Discover the 5 best mattress for your sleep needs and budget with our expert guide, featuring full reviews and advice from our resident sleep coach.

Mattresses
The Eve Premium Hybrid Mattress photographed on a wooden bed frame as part of the review process

Eve Premium Hybrid mattress review: A firm bed for hot sleepers

By Claire Davies last updated

The Eve Premium Hybrid is a TV-famous bed-in-a-box, but is it worth the price tag? Here's our thoughts are sleeping on it.

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
Two of our mattress testers sitting on the navy and white Bear Elite Hybrid mattress on wooden bedframe in sleep studio with blue walls, wooden bedside table, plant and black chair.

We've tested 120+ mattresses — these are the 6 best cooling beds for hot sleepers in 2025

By Eve Davies last updated

We've tested all the latest and greatest cooling mattresses and have selected these six as the best options for hot sleepers to buy.

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
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 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
Eight Sleep Pod 4 mattress cover with dual temperature control (indicated by one side of the bed red and the other blue) in bedroom with floor to ceiling windows and a phone icon showing sleep report with 100 sleep score

The 5 best smart beds and smart mattresses 2025: cutting-edge tech to help you sleep better

By Eve Davies last updated

Our experts recommend the best smart beds and smart mattresses, featuring advanced tech to help regulate sleep temperature, customize your sleep set up and track your health metrics

Mattresses
Avocado Green Mattress, featuring a woman and baby on said mattress

The best organic mattress 2025: Natural beds for cleaner sleep

By Claire Davies last updated

These 5 non-toxic beds are the best organic mattresses we've slept on this year for pressure relief, support, temperature regulation and more

Mattresses
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
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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