Big-ZipActive explorers require heavy duty equipment that can easily handle intensive and continuous use. Big Zip is made of tough welded fabric PD620 with waterproof TIZIP zipper (updated version), and offers reliable protection for baggage transport on airline, train, rafts or trekking tours. With a mammoth 140 liters of storage space, it will hold everything you need for a long expedition. Big Zip may be carried on the back with its extra wide padded