Manufactured in the UK using the highest quality components, the Summit XLarge self inflating mat is extremely lightweight, comfortable & warm. The top layer is manufactured from lightweight 75D rip stop polyester, the base from lightweight 75D PU coated, non-slip, water repellent polyester. The core is manufactured from high insulating, high rebound PU foam. Quality lightweight vertically & horizontally drilled holes allow for a full & fast inflation. A special TPU membrane enables an air-tight seal at lower temperatures. A super fast valve gives 3 times the airflow of a single regular valve, allowing fast inflation/deflation. The unique wedge profile offers maximum torso comfort. Mats supplied mid-folded & rolled, with a micro-fibre lined stuff sack that can double up as a luxury pillow case, repair patch & adhesive tube Individually inspected with a 24 month guarantee