The Superlite 25 Self Inflating Mat has been designed to offer you excellent comfort in a compact and lightweight self-inflating mat making it ideal for competitive challenges and backpacking The Superlite 25 Self Inflating mat is made from light weight 20D rip-stop fabric with a TPU membrane for an airtight seal The core of this 4 season mat is made up of quality ultra-lightweight vertically drilled 16kg/m sup3 PU foam for lasting performance and full inflation It also has an easy valve which is used to add air through a closed valve for extra firmness making this one of Multimat s highly acclaimed mats