Mountaintop 40L Hiking Backpack,51 x 35 x 17 cm has the following specifications Features Capacity: 1.1.The 40L hiking backpack is the perfect size for any outdoor sport of men or women like hiking,three day trips, climbing,camping & backpacking,etc. 2.There are 1 bladder sleeve, 2 front pocket, 1 hidden pouch and two mesh bottle pouches. Front pocket with an internal mesh pouch on rucksack. Bearing System: 3.Adjustable sternum strap 4.Breathable, molded foam back panel 5.S-shape shoulder straps Attachment Point: 6.Both sides of the shoulder straps has a D-shape hook, in which small items can be linked to. 7.Front adjustable straps can hang trekking pole or tripod. Product Parameters Capacity: 40L (2,440 cubic inches) Fabric: Water-resistant Polyester Item Weight: 2.1lbs (0.93 kg) Product Dimensions: 20.1 x 13.8 x 6.3 inches (51 x 35 x 16 cm) Package 1*Hiking Backpack >>>>> BUY NOW <<<<< -Suitable Capacity-40L hiking rucksack with ...