Why a Cooler Bed Can Mean Better Sleep

Your body temperature naturally drops at night. Here's how bed-cooling toppers work with that.

Your core body temperature drops a little when you fall asleep and comes back up toward morning. If your bed holds heat, you're working against that natural rhythm, and you end up tossing, kicking off the covers, and waking up.

Water instead of air

Water-based toppers send temperature-controlled water under you through thin tubing. Good Sleep uses a bedside hub to keep the water at the setting you choose, and its auto mode adjusts the temperature over the course of the night.

Keep your mattress

A topper lets you add cooling to the mattress you already own instead of replacing it.