ITEM: WATERPROOF BAGS FOR OUTDOOR SIZE: 30L. MATERIAL: TPU.CAN BE COLD STORAGE OR HEAT PRESERVATION FOR 72HOURS. WATERPROOF GRADE IPX7. GOOD FOR OUTDOOR ACTIVITIES ... 2, MAIN IN KINDS OF WATERPROOF BAGS LIKE: WATERPROOF COOLER BAGS, WATERPROOF HIKING BAGS, WATERPROOF HUNTING BAGS, WATERPROOF CAMPING BAGS, WATERPOOF BOATING BAGS, WATERPOOF FISHING BAGS, WATERPOOF PICNIC BAGS ETC. 3, AIRTIGHT & ...