The superlite compact 25s 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 16kgm 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 it is ideal for people who are looking for a really light weight mat but with no compromises on performance the 25s model is a s