Structure: Adjustable capacity of 20 liters for long backpacking trips or short hikes. Detachable peak pack. Double adjustable shoulder straps. There are two water bags on the shoulder strap. Two elastic mesh side pockets keep essentials within reach. Zipper belt pockets provide convenient storage. Products: Special backpack SIZE :63*20*32cm/40-60L Weight: 1.23kg Material: 100D nylon honeycomb /420D Oxford cloth Origin: Quanzhou, Fujian Brand: Shunwei Scene: Outdoors, fallow Color: grey, black, yellow, custom