Altosy Outdoor Hiking Climbing Camping Lightweight Mountaineering Bag Waterproof Hiking Daypack 40l 0232 nylon Imported Powerful removable suspension system, breathable perspiration, relieve burdened BIG FEATURE: Can be use for 2 ways: hiking daypacks, and school bag after you remove the suspension system,see pictures 2 front pocket for small thing or rain cover, A big main pocket, A bottom rain cover pocket, 2 Hipbelt Pockets cell phone/MP3 player Powerful Bear Breathable System, the heat could quickly spread out, avoiding the embarrassment of sweat, also it's more comfortable for your back Size: 55*36*20(21.7*14.2*7.9) Capacity: 35 L