EVOC Hydro Pro 3L + 1. 5L Bladder The ultimate lightweight bike pack. With all the storage space, organizational pockets and features you need in the size of a small vest, the EVOC Hydro Pro 3L hydration bag is a great choice for riders who want to bring along the essentials in a lightweight package. This hydration bag comes with a 1. 5-liter hydration bladder and has a magnetic tube trap for easy hydration. The chest harness features dual adjustable chest straps, dual zippered pockets, and dual stretch mesh pockets. Inside the zippered chest pockets are mesh organizational pockets and a key ring holder for proper gear storage. The large main compartment on the back holds the hydration bladder and has extra room for bulkier items like a jacket. Side adjustable compression straps allow you to tailor in the fit to get it just right and elastic webbing helps keep everything together. Features Two zippered chest pockets and two stretch mesh chest pockets with internal key holder and mesh organizational pockets Adjustable sternum and waist straps Main zippered compartment holds water bladder and larger items on the back Adjustable side compression straps with elastic webbing Magnetic tube trap SPECIFICATIONSMaterials Water-resistant, N210 D Taffeta, 3D Air Mesh, Airo Flex Gear Capacity3 liters Pack Weight250 grams Dimensions23 x 33 x 4 cm (9. 1 x 13 x 1. 6") | Evoc | Hydro Pro 3 +1 5L Hydro Bag Black