Sleeping in a heatwave is tough but this cooling mattress is here to save your nights

Summer 2026 has been the hottest on the record, leaving lots of people feeling hot and bothered, especially at night. Trying to sleep in a heatwave often feels near-impossible, and if you don’t have the right mattress to help manage your temperature, you could be looking at a long, sleepless night of overheating.

To avoid disrupted sleep and uncomfortable sweaty nights, upgrading to a cooling mattress can solve your problems. That’s where the Sweetnight CoolNest® Ultra Cooling Memory Foam Mattress comes in.

The latest model in Sweetnight’s popular CoolNest® Series, the CoolNest® Ultra takes cooling to the next level using its most advanced cooling technology to date. With an impressive 5-stage cooling system, the CoolNest® Ultra offers advanced cooling, targeted support and everyday comfort in a thoughtfully designed package.

Advanced Cooling Technology for a More Comfortable Night’s Sleep

Memory foam mattresses are notorious for trapping heat, but Sweetnight has found its way around this with its CoolNest® Ultra mattress. Within the mattress’ seven layers is a combination of gel, memory and other material-infused foams that work to regulate and maintain your temperature while dissipating heat to keep you cool through the night.

The CoolNest® Ultra has an advanced 5-stage cooling system which offers instant, adaptive and sustained cooling, less heat build-up and continuous heat release. It lowers your mattress’ temperature by up to 11°, thanks to its gel-infused memory foam and 3D ventilated circulation design which wicks away excess heat and makes the CoolNest® Ultra more breathable and fresh.

Sitting at the top of the CoolNest® Ultra is its Cooling Ice Silk Cover. It has a cool-to-touch surface which delivers quick heat relief directly on the skin. Just beneath the cover is the PCMflux High-Resilience Foam that absorbs and releases heat, while AirMesh Breathable Memory Foam features an open cell construction that allows air to flow freely to reduce heat and moisture trapping.

Support where you need it

Towards the base of the CoolNest® Ultra is its 7-zone ergonomic support foam. Contoured into seven zones, the foam adapts and moulds to the body to offer comfortable pressure relief for the joints, bones and muscles.

For extra support, the 7-zone design works to align your spine, reducing aches and pains, and encouraging better posture for front, back and side sleepers. Not only is your body supported by the mattress, but the CoolNest® Ultra’s high-density support base and its anti-slip bottom keeps it stable on your bed base while enhancing overall durability.

Designed for Different Sleep Styles

Everyone’s sleep style is unique to them, so oftentimes, it can be hard to find a single mattress that works for you as well as your partner. But thanks to its upgraded sleep technology, the CoolNest® Ultra accommodates different sleep preferences, from athletes to plus-sized people and more.

Where the CoolNest® Ultra really excels is for sleepers who overheat or experience night sweats. With rest and recovery in mind, active people will feel extra supported and rejuvenated after sleeping on the CoolNest® Ultra. Thanks to its stability via its base and edges, couples, light sleepers and fidgeters can stay comfortable all night long without being disturbed.

Smart Upgrade for Better Sleep

The CoolNest® Ultra from Sweetnight is a worthwhile purchase for all customers, and even those who already have a Sweetnight mattress. As temperatures continue to rise, upgrading to the CoolNest® Ultra is a no-brainer as nights are expected to get hotter and hotter with each passing year.

Available in 12”, 14” and 16” (Queen/King) sizes, prices on the Sweetnight CoolNest® Ultra start at $729.99, and it comes with a 10 year limited warranty.

Find out more about the CoolNest® Ultra mattress on the Sweetnight website