SleepMe

The Chilipad was circulating cold water under sleepers before bed climate was a category. A topper-style pad pairs with a bedside control unit to hold the sleep surface anywhere from 55 to 115°F — the same core mechanism as the smart mattresses, at a meaningfully lower price of entry.

What it doesn't do is also the pitch: no tracking, no app-driven autopilot, no subscription decisions. If the problem is "I sleep hot" rather than "I want sleep data," the Chilipad solves exactly that problem and stops. The value answer in a category that trends expensive.