The department of
Cooling
Cooling your sleep environment — bedroom temperature, mattress heat retention, and thermoregulation — shapes how fast you fall asleep, with science and product reviews here.
Pieces
2
Sleep Gear
August 2026 · 6 min
Cooling Pillows, Tested Against a Jug of Warm Water: What $89 Buys You That $28 Doesn't
At 2:40 a.m. on the fourth night of the heatwave, I held an infrared thermometer against the spot my head had just left. It read 35.1°C. The room, air conditioning running, read 24.6°C.
By Natalie Forsythe · Read →
Mattresses
May 2026 · 5 min
The Best Cooling Mattress Isn't Always the One That Feels Coolest: A Heat-Retention Test
The standard advice for a hot sleeper shopping the $500–$2,500 range goes like this: get a hybrid with pocketed coils, look for gel-infused foam in the comfort layer, and prioritize a phase-change…
By Laura Pendleton · Read →
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