Backpack with a 3-liter hydration bladder and a comfortable drinking tube. Specification: length. drinking hose: 1m hose ending with a valve and cap capacity: 3l option to remove the bladder from the backpack backpack with adjustable shoulder straps backpack dimensions: 46x17x17cm backpack material: Oxford The product is intended for drinking clean water only. Quantity pcs. in carton: 12