The Mountainlife self inflating sit mat is quick and easy to inflate and deflate. The sit mat has a reinforced quick-flow valve and is made from PU open cell foam core for full and fast inflation. The Mountainlife sit mat has a water repellent coating and is made from high quality PVC coating for Air tight seal. The self inflating sit mat offers great support and is compact, lightweight and portable making it ideal for camping trips, backpacking, travelling and for use at festivals. The Mountainlife sit mat is comfortable and durable and measures 40cm x 30cm x 3cm.