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

Mattress tester Nicola Appleton dives onto the Helix Midnight Luxe mattress in our Sleep Lab. In the bottom right corner, a Tom's Guide Price Drop deals graphic

Presidents' Day mattress sales 2026: What to expect and the best early deals

By Claire Davies, Louis Ramirez last updated

The Presidents' Day mattress deals are starting, so get ready to save with our expert predictions and guide to the best early sales.

Mattresses
A woman sleeping soundly in bed under a white duvet, as early morning sun shines through the curtains behind her.

4 surprising ways a snowstorm can ruin your sleep — and how to fix it

By Claire Davies published

From taking ages to fall asleep to waking up repeatedly during the night, cold weather can spell trouble for your sleep. Here’s what you need to know…

Sleep
The Allswell Mattress with no bedding in a clean, light-colored bedroom.

The Allswell mattress review 2026: hybrid support at a low price

By Alison Barretta last updated

The Allswell mattress promises medium-firm comfort and a cooler sleep, but does it deliver? We slept on it for a month to find out...

Mattresses
The DreamCloud Classic Mattress on a white bed frame in a modern light blue bedroom.

DreamCloud Classic mattress review 2025: A fantastic mid-range option for most people

By Lauren Jeffries last updated

Side sleepers will love how DreamCloud's best-seller cushions the body, but stomach sleepers should avoid it

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

The 5 best mattresses our sleep experts have tested

By Claire Davies last updated

Find the best mattress for your sleep needs with our expert guide, backed by all-new lab data and home testing — plus expert buying advice from our in-house sleep science coach

Mattresses
The Siena Memory Foam Mattress on a bed frame in the Tom's Guide testing studio, in the top left corner is a Tom's Guide Price Drop deals graphic

Amazon mattress sales for January 2026: Big deals on budget beds

By Jim McCauley last updated

Looking for a mattress deal on Amazon? We've found the best for every sleep style this January — here's our expert guide to the savings.

Mattresses
Casper Comfy Mattress Topper, featuring a woman resting on her back enjoying said topper on her bed

The best Casper mattress sales for January 2026: up to 25% off mattresses and bundles

By Alison Barretta last updated

Our expert guide to the best savings in this month's Casper sale, including discounts on cooling beds and mattress bundles.

Mattresses
The DreamCloud Classic Hybrid Mattress against a green and blue background, a Tom's Guide Price Drop deals graphic in the bottom left corner

DreamCloud mattress sales for January 2026: Luxury hybrids at low prices

By Claire Davies last updated

We've combed through this month's DreamCloud mattress sales and highlighted the best deals — browse our expert picks.

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)

Nectar mattress sales for January 2026: The best deals in the US + UK

By Claire Davies last updated

January's Nectar mattress sale is now live. Here are the best discounts on these popular memory foam and hybrid beds...

Mattresses
A woman in her pyjamas lying on her front on the Tempur-Pedic Tempur-ActiveBreeze smart bed

Tempur-Pedic mattress deals for January 2026: Save up to $500

By Claire Davies last updated

Yes, there's a Tempur-Pedic mattress sale to kick off 2026 — here is our expert guide to the deals.

Mattresses
The Helix Midnight Luxe mattress placed on a white wooden bedframe, photographed in our blue coloured Testing Lab

The best Helix mattress deals for January 2026: Save 27% with our exclusive code

By Claire Davies last updated

Shop this month's Helix mattress sales for 27% off sitewide, including its extensive lineup of hybrids. Here's what we recommend buying...

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

The best Saatva mattress sales in January 2026: 15% off $950+

By Claire Davies last updated

This month's Saatva mattress sale cuts 15% off orders over $950. Here are the deals our experts recommend...

Mattresses
Saatva Classic Mattress

The best king size mattress in 2026: Tested and approved by sleep experts

By Frances Daniels last updated

King size mattresses are excellent choice for couples, bed sharers and those who just like to spread right out — these are the best options, for all sleepers and budgets.

Mattresses
A close up of a stack of mattress toppers of different designs and thicknesses

The best memory foam mattress toppers: Expert tested toppers to soften a firm bed

By Frances Daniels last updated

Add cushioned comfort to your bed with the best memory foam mattress toppers, tested and recommended by experts.

Mattress Toppers
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.

The best cooling mattress 2025: 6 expert-recommended beds for hot sleepers

By Eve Davies last updated

Make 2026 the year you put night sweats to rest with one of these top cooling mattresses, chosen by hot sleepers.

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 2026: Top picks from a sleep tech reviewer

By Eve Davies last updated

Our sleep tech experts recommend the best smart beds and smart mattresses to regulate your temperature, customize your bed and track your health

Mattresses
A woman sits on the foot of a queen size Saatva Classic Mattress on a bed frame in a bedroom, her arms stretched as she considers the size of the mattress

The 7 best Saatva mattresses to buy online in 2026: Chosen by our expert testers

By Claire Davies last updated

Find the luxury bed of your dreams with our expert guide to the seven best Saatva mattresses online, cherry-picked by our experienced testing panel

Mattresses
A collage of images: on the left, the DreamCloud Classic Hybrid Mattress on a bed frame in our Sleep Lab. Top right, mattress testers Ruth Jones and Frances Daniels unbox the Siena Signature Mattress onto a bed frame. Bottom right, tester Nicola Appleton leaps onto the Helix Midnight Luxe mattress

Best mattress in a box 2026: hybrid, all-foam and organic boxed beds, tested by experts

By Claire Davies last updated

The best mattresses in a box offer comfort and support, delivered straight to your door. We've tested boxed beds of every type to find the 9 best for all sleep styles and budgets.

Mattresses
Tom's Guide Mattress Content Director Julia Sagar places both hands on the middle third of the Saatva Classic, where the lumbar crown is located, and smiles because it feels so supportive

The 7 best medium-firm mattresses of 2026: Reviewed by expert testers

By Claire Davies last updated

Finally get that Goldilocks comfort with the seven best medium-firm mattresses — all rated by our testers as not too soft but not too hard

Mattresses
In the top left corner, mattress testers Nicola and Appleton stand next to a stack of memory foam mattresses on a bed frame in our Sleep Lab. In the top right, Lauren Jeffries lies on the Nectar Premier Memory Foam Mattress while Ruth Jones jumps on the bed to test the motion isolation. Bottom left, Nicola Appleton and Frances Daniels take a break from testing to relax on the Siena Signature Mattress. Bottom right, mattress tester sits on the edge of the Plank Firm to test the edge support

What is the best memory foam mattress of 2026? Top 7 tested by our sleep experts

By Claire Davies last updated

Our experts have slept on memory foam mattresses from Nectar, Tempur-Pedic, Saatva and more to bring you this guide to the best, based on unbiased reviews and objective data.

Mattresses
Two of our mattress testers sit on the Siena Signature Mattress on a bed frame in our testing studio. On the left, Nicola Appleton sits close to the side of the mattress to test the edge support. On the right, Frances Daniels sits on the sleeping area of the bed to better understand the comfort.

The 8 best cheap mattresses in 2026: Reviewed by our expert testing panel and under $500 for a queen

By Frances Daniels last updated

Find quality comfort at a lower price with the eight best cheap mattresses — all tested and approved by our expert review panel

Mattresses
Best mattress under $1,000: The image shows Tom's Guide's testers unpacking the Siena Memory Foam Mattress

The best mattress under $1,000 in 2026: Proof that great sleep doesn't have to cost a fortune

By Nicola Appleton last updated

Take your dollar further by investing in one of the best mattresses for under $1,000 in a queen size — all tried and tested in controlled and real-world settings by our expert sleep team.

Mattresses
A four-image collage of the best mattresses showing testers sleeping on their side.

These are the 8 best mattresses for side sleepers in 2026 according to the expert testers who slept on them

By Claire Davies last updated

Find cushioning comfort to soothe your shoulders and hips with our guide to the eight best mattress for side sleepers, chosen by our expert reviewers and backed by unbiased test data

Mattresses
Avocado Eco Organic Mattress on a bed with two plants to the right of it

Avocado mattress sales and deals for January 2026: Up to $800 off organic and eco-friendly beds

By Claire Davies last updated

Avocado's January mattress sale is here, with 10% off — including up to $800 off its top mattresses

Mattresses
A collage of photos depicting the various stages of our hybrid mattress testing and reviewing process in order to find the best options for people to buy in 2025

The 7 best hybrid mattresses in 2026: According to our sleep experts, lab-based test data and in-depth reviews

By Claire Davies last updated

Find the comfort and support of your dreams with our guide to the seven best hybrid mattresses online, narrowed down from over 80 foam-and-spring beds our expert team has tested

Mattresses
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