Pop'n'Pack is compressible rucksack by Master-Piece. Can be folded down into a small pouch which comes included with the bag. Features a zippered front pocket and adjustable straps. Made with 210d nylon which is teflon processed for water repellency. The material ensures low weight (270g) and tear-resistance. The back is stiffened with elastic bands. Made in Japan to exacting standards.