Eight Sleep's Pod 5 cools your mattress down to 55°F in a heatwave, and it's up to $500 off in 4th of July sales

A woman lies in her bed at night, sleeping well. On the floor next to her is the Eight Sleep smart mattress cover Pod. A Tom's Guide Eight Sleep price drop deals graphic (left) — (Image credit: Eight Sleep)

It's the 4th of July weekend and while the hot weather is great for your backyard barbecue, it's a nightmare for sleep. The Eight Sleep Pod 5 smart cooling mattress cover, now up to $500 off at Eight Sleep, might be the answer to your disrupted nights and sweaty mornings.

It was the hottest June on record in parts of the U.S. and with more heatwaves expected, modern problems require modern solutions. The high-tech Eight Sleep Pod mattress cover is one of the best smart beds and mattresses on the market and it's pushing the boundaries of cooler comfort. Our lead tester described the Pod 4 as "any hot sleepers dream".

Want a traditional mattress that sleeps cool? Many of the top-rated beds in our best mattress guide excel at temperature regulation, and all of them are discounted in this year's best 4th of July mattress sales too. For now, here's more about the Eight Sleep Pod 5 sale...

The Pod 5 is the latest innovation from Eight Sleep and as well as temperature controls it comes with sleep tracking and a smart alarm. Unfortunately, it doesn't contain a mattress — buy that separately or stick with the one you have. A queen is $2,749 in the 4th of July sale (was $2,999) and you can save an further $250 if you opt for the cooling add-ons. You'll need to pay for a subscription to the Eight Sleep app as well: prices start at $17/month. A 30-night trial is included but warranty length depends on your subscription.

User score: ★★★★½ (30,000+ reviews)

The ideal temperature for sleeping through the night

The Eight Sleep smart mattress cover is fitted with a series water pipes that run across the surface and connect to the main Pod. These pipes warm or cool throughout the night, adjusting the bed to a temperature of your liking.

The lead tester in our Eight Sleep Pod 4 mattress review describes being "blown away" by the Eight Sleep's temperature control during a heatwave. When she climbed into bed, the surface was perfectly chilled and because the bed monitors and changes the feel as you sleep, she never woke up sweaty.

In winter, on the other hand, she could use the controls to "gently warm" the mattress before climbing in — none of that 'cuddling up in a snow drift' feel.

Hand pressing into black material of Eight Sleep Pod 4 — (Image credit: Future)

Temperature plays an important part in your sleep-wake cycle. In the evening, your core temperature naturally drops, signaling to your body to drift off.

But when the room is too hot, your body can't lose this excess heat, and you'll struggle to fall asleep. And when you do drift off, you might find your sleep remains in lighter stages, causing frequent nighttime wake-ups.

The Eight Sleep's integrated climate control allows you to take charge of this temperature drop, so you can sleep better whatever the weather.

And don't forget, this is a smart mattress cover: in-built sensors monitor throughout the night to create a consistently comfortable feel. Plus, the longer you use it, the more it learns your preferences. By the end, our tester found it had "seriously leveled up [her] sleep quality."

Smaller budget? Try this...

More good sales to browse

DreamCloud Classic Hybrid – From $399 at DreamCloud
Siena Signature Hard Foam Mattress – from $159 at Siena
EgoHome Black Memory Foam – from $269 at EgoHome
Nectar Premier Memory Foam – from $549 at Nectar Sleep
Birch Essential Organic Hybrid – from $692 at Birch Living
Cocoon by Sealy Chill Cooling Bed – from $349 with code COCOON35

Ruth is an experienced Senior Staff writer at Tom’s Guide, covering all things sleep and mattresses. She writes to help people sleep better, from how-tos to the latest deals to mattress reviews, and has interviewed an array of experts who share her passion. She is also our specialist on memory foam — she’s flown around the world to see memory foam being made — and leads our hotel mattress content. She has a deep interest in the link between sleep and health, and has tried enough mattresses, from Helix to Nectar to Simba, to know the right bed really can make a difference to your wellbeing. Before joining the team at Tom’s Guide, Ruth worked as a sleep and mattress writer for our sister website, TechRadar.