Apidura Packable Backpack 13LAn ultralight and waterproof packable backpack that offers flexible storage and can pack down to stow on your bike frame. Designed for use both on and off the bike, the Packable Backpack is constructed from a durable Cordura ripstop with a tight weave for added strength. The 13 litre main compartment secures contents with a roll top and buckle closure. For comfortable carrying, contoured shoulder straps and an adjustable cord hook sternum strap