45L Heavy Duty Hiking Backpack: 45L backpack capacity is designed with strong outdoor loading capacity, designed for hobby hikers. External suspension straps for hanging tents, sleeping bags, trekking poles, etc. Backpack size: 62x28x18cm/24x11x7in, perfect for hiking and outdoor travelling activities.High Quality Material: The backpack is made of nylon material, nylon has excellent abrasion resistance, stronger and more durable than ordinary polyester, can accompany you for a longer period of time.YNS waist buckle and YKK zipper design, sturdy and durable. Ultra-breathable 3D mesh fabric covers the back panel and the inside of the shoulder straps, making the user very comfortable. CR Lightweight Carrying System: The aluminium alloy bracket inside the back of the backpack bends around the back to separate the back from the backpack, increasing the weight capacity of the backpack. The thickened lumbar support and upgraded belt design enhance the comfort and firmness of wearing the backpack, so that the stress point of the whole backpack is at the waist. Meanwhile, the mesh panel on the back of the backpack is sweat-conducting and breathable, dispersing sweat well. Multi-purpose Backpack: Double-layer top bag for separating different items, first aid whistle at chest strap. The front side opening makes it easy to collect items, while the side pouches on the waistband can also be used to store small items. Inside the bag, there is a separate water pocket and a water hose outlet, easy to use. The backpack is height-adjustable, suitable for men and women of different heights. Traveling Essentials: weight only about 1.7kg/3.7lbs, easy to carry. Perfect for mountaineering/hiking/traveling/skiing/climbing and other outdoor activities. The bottom compartment has a built-in rain cover, so you can use it even when it rains. Even if you wear it for a long time, you will not feel tired and it is very comfortable to carry on your back.