Conquer the trail with ultralight insulation and air-sprung superiority.

Engineered for ultralight backpacking and bike touring, the Sea to Summit Ultralight ASC Insulated Mat redefines lightweight warmth. Its 2.5 season performance and R-value of 3.1 ensure thermal efficiency even in cooler conditions, courtesy of the Exkin Platinum fabric and Thermolite insulation. The Air Sprung Cell design delivers uncompromising comfort at a mere 12.3oz weight and 4 x 9.5 in packed size. An anti-microbial liquid-extruded TPU lamination on the 30D/40D nylon fabric prevents delamination for extended durability. With the multi-function valve and PillowLock system, you can easily inflate and customize your sleep experience. Accompanying the mat are an Airstream Pumpsack, stuff sack, and a repair kit—your lightweight companion for backcountry adventures.

Available in X-Small, Small, Regular, and Large sizes.