Features of the Exped Waterproof Shrink Bag Pro Seal lip for enhanced waterproof Performance Quick and simple compression through a large purge valve Ample attachment points Durable 210D nylon fabric Can be used as Exped mat inflation aid in combination with a Schnozzel (not included) Taped seams Heavy duty waterproof compression bags Roll-top closure and seal lip for enhanced waterproof Performance Waterproof compression bags for all watersport activities