Our favourite cooling mattress is 30% off in the Emma Boxing Day mattress sale

(Image credit: Emma)

If you're a hot sleeper like me, a cooling mattress can be a game-changer. My top choice in the Boxing Day sales for banishing night sweats is the Emma Hybrid Airgrid Mattress for £699 in a double at Emma Sleep (reg. £999).

Better yet, use code BOXINGDAY30 to take £30 off orders of £600 or more, which drops the above price to just £669. For orders of £1000 or more, use code BOXINGDAY100 for £100 off instead.

The Emma Hybrid Airgrid scored the top spot in our best mattresses guide — not only for its innovative cooling technology, but also for the near-weightless feel that yields deep pressure relief to relieve aches and pains.

In our Emma Hybrid Airgrid Mattress review, we found that this mattress offered high levels of pressure relief and slept incredibly cool — the company's AirGrid tech is not a gimmick by any means. It also absorbs motion exceptionally well, which surprised us, given that this is a very bouncy bed. Right now, a single is £468 (was £669) and a double is £669 (was £999). But if you use code BOXINGDAY30, you can get an additional £30 off your purchase.

Our score: ★★★★
User score: ★★★★★ (100+ reviews)

Why we love this mattress...

We slept on this mattress and can attest that it does, in fact, sleep cool. That's due to its AirGrid Technology layer, which has flexible cooling pockets to improve overall airflow and contour to your body while you sleep.

We found that this mattress offers enough support for average-weight back sleepers, but overall think it's best matched to side sleepers. Thanks to its high levels of pressure relief in the shoulders, hips, and knees.

Our tester noted that it gives you a weightless sort of feel, and because of its hybrid design, it was easy to shift around into different positions.

One thing to note is that it does have an initial strong 'off-gassing' smell, something that can happen to even the best mattresses in a box. Our tester said it took a full day with the window cracked for the smell to completely leave, but then it was gone.

If you like a firmer mattress...

I've been sleeping on this mattress for the past year, and it has helped ease the pain in my hips. As a side sleeper, I need a high amount of pressure relief in my shoulders and hips, and the Simba Hybrid Pro does just that. It also absorbs movement in the bed, so I'm rarely woken up by my partner moving around. Right now, a single is £799, and a double is £1,199, but the real deal here is the free bedding bundle, which includes two pillows, a duvet, and a mattress protector.

User score: ★★★★★ (35k+ reviews)

Alexis recently joined the Tom's Guide Sleep Team as a Deals Writer. She is passionate about helping others get better sleep and even more passionate about finding a great deal, whether that's on some of the top mattress brands out there like Saatva, Nectar and DreamCloud, or on leading sleep tech like smart trackers. She is an experienced writer and editor in the lifestyle industry and has worked on major UK and US publications, including Daily Mail, Space.com, and Black Women Rising Magazine.