The Big Agnes Insulated AXL Air Sleeping Pad is so lightweight that you won't believe you're carrying an insulated mattress. With Primaloft Silver Insulation and a reflective interior for greater thermal efficiency, this pad will keep you comfortably insulated from the ground when temperatures plunge below freezing. It's great for backpacking, bikepacking, fast and light alpine missions, or any other adventure where keeping weight and packed size to a minimum is a must.