Not a typo! Cocoon by Sealy's top-rated cooling memory foam mattress is just $271 at Walmart

Cocoon by Sealy Chill mattress with Price Drop graphic overlaid

(Image credit: Sealy / Future)

I'm a mattress tester and I've just spotted the best deal for hot sleepers this 4th of July. Walmart is offering an epic discount on the Cocoon by Sealy Memory Foam Mattress, with a queen just $373 – a saving of $426.

The Cocoon by Sealy Memory Foam bed is so good that it's earned a place in our best mattress guide. That's because it offers specialist cooling at a budget friendly price, with a heat-wicking cover that will keep you a comfortable temperature even as summer warms up.

If you can't sleep in the heat, this cooling deal from Walmart is among the best 4th of July mattress sales I've seen this year. Read on to discover why I think it's a saving to snap up...

The best bedding deals to shop this 4th of July – from just $36

Cocoon by Sealy Memory Foam Mattress
Was: from $649
Now: from $271
Saving: up to $492 at Walmart

Summary: The best cooling mattresses are specialist beds, and for that reason they tend to command a high price tag. The Cocoon by Sealy Chill Memory Foam bucks cooling mattress trends in a couple of ways. For a start, it's an all-foam bed, not a traditionally more breathable hybrid. Secondly, it's typically sold in the lower mid-range price bracket (although in this sale, you can get it at a budget price) – definitely not a premium buy.

To keep temperatures low, the Cocoon by Sealy Chill uses a stretch-knit cover made with woven poly fibers to draw heat away from the body as you sleep. Beneath this sits a layer of Perfect Fit memory foam which adapts to your body to provide cradled support. In our Cocoon Chill Memory Foam mattress review we found the foam lightly contouring rather than body-hugging, but still capable of providing excellent pressure relief. Extra hot sleepers should consider upgrading to the Cocoon Chill Hybrid, from $539 at Sealy, but for most, the cooling prowess of the memory foam model should be enough.

Benefits: 30-day returns | 10-year warranty | Free shipping

Price: This is a huge saving from Walmart, especially as Sealy runs the same 35% off mattress sale throughout the year. A hefty $426 saving reduces the queen size down to $373 (was $799) and you get a 10-year warranty. We rarely recommend shopping third-party as you sacrifice some extras – in this case, you won't get a proper mattress trial. However, the price is so good it's impossible to overlook this deal.

What are the benefits of a cooling mattress?

A cooling mattress does just what you expect it to: it keeps you cool throughout the night. We naturally cool as we get sleepy, which is why it can be so hard to drift off in hot weather. A cooling mattress helps ensure the bed stays an even temperature throughout the night, so you can fall asleep and stay asleep.

Hybrid mattresses are typically best at cooling because the open coils are naturally breathable, but sleep brands are becoming increasingly better at improving temperature regulation in all-foam beds. There are even high tech approaches to cooler sleep – like the Eight Sleep smart cooling mattress cover, now $200 off in the 4th of July sale.

Ruth is a staff writer at Tom’s Guide, covering all things mattress and sleep. She has a deep interest in the link between sleep and health, and has tried enough mattresses to know the right bed really can make a difference to your wellbeing. At Tom’s Guide she writes to help people sleep better, from how-tos to the latest deals to mattress reviews, and has interviewed an array of specialists who share her passion. Before joining the team at Tom’s Guide, Ruth worked as a sleep and mattress writer for our sister website, TechRadar.