AIRCAP Hot Tub Covers

thrml. Foam-Free Hot Tub Covers

Upgrade your hot tub with a lightweight, foam-free cover from thrml. The AIRCAP 1 replaces the traditional foam core with a sealed AirLoc drop-stitch chamber, eliminating the absorbent foam that causes conventional spa covers to become waterlogged and increasingly difficult to lift.

Weighing approximately 35–40 pounds depending on size, the AIRCAP 1 remains lightweight because it does not absorb water. Its Ziptech modular skirt system includes three skirt depths, providing a secure, semi-custom fit without requiring a custom-built cover.