KingCamp Polar 45L Anti-Tear Water Repellent Climbing Backpack with Adjustable Strap Belt for Outdoor HIGH CAPACITY: With 45L, high quality professional backpack for camping, hiking and backpacking, designed to be comfortable and functionally versatile. Top lid pocket with Rain Cover and Duplex Buckle, front secure zippered pockets with two compartments and side zipped pouches to keep your stuff separate and organized. INTERNAL FRAME SYSTEM: Serves to support the pack and distribute the weight of its contents across the body more appropriately, by transferring much of the weight to the hips and legs. Different adjustable sizes to fit your height. Padded and breathable mesh back panel and shoulder straps offer cushioned comfort, while also promoting air circulation along your back and shoulders. Sternum strap with emergency whistle buckle, available to adjust up and down. DURABLE AND COMFORTABLE: With K.A.S back system, you will feel comfortable when you put on this backpack. With the chest and waist adjustable straps, you can own your size to fit your body. You can fix the bag with the buckle and the top cover can be removed from the whole backpack, you can use it as a light backpack separately. All the straps are widened and thickened which make this backpack more comfort to wear. WATERPROOF AND WATER REPELLENT: Water-resistant rip-stop polyester as the fabric can quickly slide water aside before water has a chance to penetrate it. Also a WATERPROOF rain cover stored in the top pocket, protect the whole pack from rain. TOOL ATTACHMENT POINTS: There are many hang systems for trekking pole, water bottle, mat pad, tents, sleeping bags and other accessory. It is ideal for trekking.