Multimat Superlite 38 Self Inflating Sleeping Mats are produced using the highest quality components. The outer shell is manufactured from ultra-lightweight 20D rip-stop polyester fabric, with a TPU membrane for an air-tight seal. The insulating core is manufactured from ultra-lightweight vertically & horizontally drilled 18kg/m 3 PU foam for lasting performance & full inflation. The self inflating easy valve can be locked while topping up the mat with air by mouth. The Superlite 38 self inflating mats are supplied with a stuff sack matching the upper fabric, retaining band & a repair kit.