Many pieces of lightweight camping equipment have surface materials that are smooth and, to be frank, somewhat uncomfortable in direct skin contact. The Sea to Summit Premium pillow, however, features a pleasantly soft, brushed polyester fabric surface. The structure has the same Air Sprung Cell design you find in Sea to Summit airpads, helping you keep your head comfortably in place - the pillow is not convex. - Technical padding fiber between the surface fabric and the airtight compartment - The valve does not let air escape between breaths when inflating the pillow - Includes a packing bag - Compatible with the Pillow Lock Velcro strips provided with Sea to Summit sleeping pads: when you attach the strips to your sleeping pad, the pillow stays excellently in place