The lightweight model is suitable for weekend hikes or for several days, mountaineering, traveling, and as a travel backpack (bag). The main compartment is accessible through the top flap, front or bottom entry, making it easy and convenient to put in or take out everything you need. The back design has excellent ventilation, so it will be very comfortable in hot conditions and at high walking intensity. With its own low weight, the backpack has high strength and wear resistance; it is made of 420 D nylon fabric. Material: 420D nylon