Altosy Summit 45 Internal Frame Pack 2007 Easy access to main compartment via top and front. Powerful suspension system, breathable perspiration, relieve burdened. Powerful Bear Breathable System, the heat could quickly spread out, avoiding the embarrassment of sweat, also it's more comfortable for your back The lightweight, easy to fit and comfortable women's or men's specific Viva 45 is ideal for weekend Material: waterproof nylon capacity: 45L Size: 24.8"x14.56"x7.87"