Purple Mattress vs Casper 2026: Which Sleeps Cooler?
Comparing Purple vs Casper in a 28-night cooling test: real surface temperature data reveals which mattress hot sleepers should buy in 2026.
Editor-in-Chief
Certified Sleep Science Coach (CSSC), former Consumer Reports senior analyst
Natalie spent four years at Consumer Reports testing everything from blenders to baby monitors before she got assigned the mattress beat and discovered her true calling — lying down professionally. She's personally slept on 80+ mattresses for at least two weeks each, using a pressure mapping pad, a motion sensor, and the brutally honest feedback of a partner who will absolutely tell her when a mattress is terrible at 3am. Her testing methodology measures what actually matters: pressure relief for side sleepers, motion isolation for couples, and edge support for people who sleep like they're trying to escape the bed. She got her Certified Sleep Science Coach credential specifically because she was tired of mattress companies telling her she was testing wrong.
8 years of experience in sleep and mattress.
Comparing Purple vs Casper in a 28-night cooling test: real surface temperature data reveals which mattress hot sleepers should buy in 2026.
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Tested all three for 30+ nights — Purple wins on cooling, Casper on balance, Nectar on value at $899. Which mattress wins depends entirely on your sleep priorities.