Sea to Summit Ether Light XT Mat

Built for extreme cold without the bulk, the Sea to Summit Ether Light XT Extreme Air Pillow is your go-to for four-season comfort. With a thick 4-inch profile, its XT Air Sprung Cells™ offer a stable, cushioned sleep surface ideal for side sleepers and cold-weather campers.

Dual layers of THERMOLITE® insulation trap heat and reduce air movement inside, helping to prevent convective heat loss. Whether you're camping in alpine snow or winter hiking trails, this ultralight mat delivers warmth and packability without compromise.