The RGD roll top 30 liter waterproof backpack is designed for use as a camping, survival, tactical or bug out pack. The simplistic roll top design keeps gear and belongings dry without worry of any failing zipper components. The fully waterproof primary pack is constructed of 500D PVC. The external accessory MOLLE bags are made of water resistant nylon. The RGD roll top waterproof backpack (excluding accessory bags) is backed by a lifetime warranty against defect.