Altosy 38l Hiking Daypack Outdoor Waterproof Travel Backpacks 9650 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 Powerful Bear Breathable System, the heat could quickly spread out, avoiding the embarrassment of sweat, also it's more comfortable for your back 2 front pocket, a main pocket with a compartment for packing Hydration Bladder ,A bottom rain cover pocket, 2 Hipbelt Pockets cell phone/MP3 player Material: high quality waterproof nylon Capicity:38L