Features essential part of any kit list from mountaineers and backpackers to hikers and campers whatever your activity this waterproof rucksack liner is ideal for keeping clothing and equipment dry 70d taffeta nylon construction this pu coated layer is lightweight and durable completely waterproof with a hydrostatic head of 10 000mm the waterproofness of this liner is comparable to a tent groundsheet meaning it can resist water taped seams guarantee water protection and improve dur