About Daypack With Water Bladder Item： -Model no.:FW1719 -Material:polyester -Color:colours for choose -Size:46x27x11cm -Closure Type:zipper -Weight:about 0.49g -Made of ultralight water resistant material with good tear resistance and does not get dirty easily. -With the thermal insulation compartment, the Hydration Pack keeps your liquid cool -hiking water backpack with the insulated 2L bladder compartment,there is a clip on left shoulder strap to help fix the hose of the bladder. -Include 2 deep pockets compartment and 1 mesh pocket, enough space to carry clothes, keys, snacks, phones, wallet, etc. -Padded breathable air back panel -adjustable chest strap with whistle -With two extra pockets on the wide waist straps, can put your phone or other valuables in and take them out freely. -reflective stripe -headphone jack