‘Stays cool all night’ — Cocoon by Sealy’s best-selling memory foam mattress drops to $349 thanks to secret discount code

Ahead of this year's summer heatwaves, we're currently retesting a clutch of iconic cooling mattresses to see how they stack up against this year's newcomers. Among them is the Cocoon by Sealy Chill, down to $349 (was $539) with code COCOON35, and so far it remains one of the best value options we've tested.

While the current top-ranking cooling bed in our best mattress of the year guide sits in the luxury price bracket, the Cocoon by Sealy Chill comes in at $597 for a queen. That's competitive for a memory foam mattress made with heat and sweat-wicking Phase Change Material (PCM is typically found in more expensive mattresses).

The current 35% discount also pole-vaults it into this month's best mattress sales, restoring the Chill to one of the lowest we've seen in over a year. Here's why it's worth considering for cooler sleep on a budget this summer...

Save 35%

Cocoon by Sealy Chill (twin): was $539 now $349 at Cocoon By Sealy

A queen-sized Chill Memory Foam Mattress is now $597 (was $919) with th discount code COCOON35. That's over $100 cheaper than the lowest price we've seen in a year. In our Cocoon by Sealy Chill mattress review we say it's best for back and stomach sleepers due to slightly firmer foam, though heavier side sleepers should love the support too.

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Cheaper than other specialist cooling beds

The best cooling mattresses can offer some much-needed relief from night sweats and nighttime awakenings, but the average price of a queen-size cooling bed is $1,407 — a hefty price tag if you're not in the market for a luxury mattress.

So, at $597 for a queen, the Cocoon by Sealy Chill Mattress is a much more accessible alternative. Especially when you consider the cooling powers it brings, which brings me to my second point...

The cooling tech of the Cocoon by Sealy Chill Mattress stems from the Phase Change Material (PCM) it uses.

PCM absorbs excess body heat when you're feeling stuffy at night, with research finding that the mattress material lowered skin temperature and improved human heat dissipation by up to 25.6% more than non-cooling beds.

Testers backed up this fact with their verdict: "For anyone seeking a budget all-foam mattress that stays cool all night, this is a strong contender."

Alternatives to consider

Budget

Siena Signature Memory Foam Mattress (queen): $294 at Siena

While the Siena mattress isn't technically a cooling mattress per se, our Siena Signature Mattress review lab tests found the temperature regulation to outperform the budget price tag. Voted by testers as the best cheap mattress on the market, a queen is always under $300 and that price includes a 180-night sleep trial and a 10-year warranty.

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Mid-range

Save 25%

Brooklyn Bedding CopperFlex Pro Hybrid Mattress (queen): was $1,332 now $999 at Brooklyn Bedding

While the Cocoon by Sealy may be the most affordable specialist cooling beds we've tested, the Brooklyn Bedding CopperFlex Pro mattress is by far the best mattress under $1,000 for a queen if you want top-notch cooling properties. A steady 25% deal keeps a queen at $999, but look out for the brand's 30% off sale during major sale events (such as the Memorial Day mattress sales). Benefits include a 120-night sleep trial and a lifetime warranty.

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Luxury

Save 35%

Bear Elite Hybrid Mattress (queen): was $2,284 now $1,485 at Bear Mattress

While testing this cooling luxury mattress for our Bear Elite Hybrid Mattress review, we were incredibly impressed with how this bed dissipates heat for a refreshing sleep. Frequent 35% off deals at Bear, means you'll often find a queen under $1,500. Benefits include a 120-night sleep trial, a limited lifetime warranty, and free shipping and returns.

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