Stay warm by reducing heat loss between your body and the ground and get a great night's sleep with the NAP-PAK inflatable sleeping mat with PrimaLoft insulation or the ultimate solution for warmth. This small packed-volume mat is durable, constructed of ripstop nylon, and ultralight (550g) without compromising comfort and warmth by using air cell baffles to provide a more even dispersion of pressure across the mattress for a comfortable nights sleep.