The Sea to Summit's lightest, thickest, and quietest sleeping mat is equipped with full-area Air Sprung Cells and insulation for year-round use. With the EtherLight XT Air Mat, Sea to Summit sets a new standard in the realm of ultralight and comfortable air mats. The EtherLight XT combines an exceptionally lightweight 30/40D nylon fabric with Exkin Platinum and Thermolite insulation, as well as a Loop Baffle Air Sprung Cell construction. The result is a 10 cm thick mat with an incredibly low weight.