The MSR Dromlite Bag is a great choice for water storage in base camp. The bags roll up for transport, but are available in many sizes to meet your base camp needs. Compatible with many water filters these bags are easy to fill and easy to use. These bags use 200 denier Cordura fabric, some of the toughest fabric on the planet, to protect against tears and punctures. These fabrics are also coated with BPA-free, food grade polyurethane for safe water consumption. These are the toughest, most reliable choice for water transport and storage.