Camp Mat Self Inflating - LargeThe Sea to Summit Camp Mat Self Inflating is a self inflating sleeping mat with 1. 5" of foam thickness with Delta Core V coring to remove unnecessary weight and minimize packed size. A 75D polyester top and bottom fabric offer durability. R4 insulation rating for 3 season sleeping. Features: Smaller die cut holes in body contact areas shoulder, hips, and feet keep you warm Larger die cut holes in non body contact areas reduce the mat's weight and