The Jack Pyke English oak bivi bag is made from tough fabric. Jack Pykes Stealth fabric - 'Breatha-tex" is a stealth material is a silent, durable high-tech fabric that is designed to be completely waterproof and windproof yet remain capable of breathing. The membrane of the fabric will evaporate any sweat to the outside of the fabric and therefore moderate your body temperature to keep you dry and comfortable, complete with a mesh bag what more could you ask for? The bag measures 210cm long not including the hood. The colour is British DPM