This sleeping mat features Mountain Equipment's unique and patented Helix internal baffle construction which consists of vertically aligned baffles designed work with layers on synthetic Polarloft insulation, stretched from the top to the bottom of each mat and bonded in place to stop convection occurring inside the mat. The Polarloft insulation provides more reliable and durable warmth than that's offered by foam, self-inflating, or aluminium foil mats.
The two-way Gas mask valve allows the user to inflate the mat without any air escaping while still allowing the user to dump air out quickly when it's time to strike camp. A supplied roll top Windsock offers rapid, easy, and reliable inflation and doubles up as a lightweight stuff sack. Supplied with a repair kit.