Phase-Change Material (PCM): Definition & What It Means for Buyers
A class of cooling materials embedded in mattress covers and comfort layers that absorbs body heat during temperature transitions, keeping the surface measura
Phase-Change Material (PCM): Definition & What It Means for Buyers from Sleep Sage's independent testing team. Every recommendation on this page was earned through measured performance — not paid placement.
What you'll find on this page about phase change material: lab-measured scores, hands-on testing notes, our recommended buyer profile, current pricing intelligence, and a clear verdict from the Sleep Sage editorial team. Page last reviewed August 2026.
A class of cooling materials embedded in mattress covers and comfort layers that absorbs body heat during temperature transitions, keeping the surface measura