Advantages of BOGDA35 Hiking Backpack by SKYSPER : The BOGDA35 is the latest mountaineering and hiking backpack designed by SKYSPER R&D professionals, focusing on lightness, durability, safety and innovation.A real 35L capacity, guaranteed!（20.47×12.2×8.66 inch）.High-density 600D polyester fiber, super waterproof and leak-proof, wear-resistant and tear-resistant.Premium SBS brand zippers with detachable tail ropes.The craftsmanship of the origami corners and the design of contrasting colors make our products some of the most fashionable and versatile on the market. The spacious main compartment comes with an independent space, a water pipe outlet and fixtures for a 3L hydration bladder - super convenient for water replenishment when outdoors. The middle compartment comes with a convenient key hook to keep all your belongings organized.Reflective strips on the front and back of the backpack ensure the safety of walking at night by increasing visibility. Ergonomic Carry System: Multi-slot ventilation, high elastic and breathable 3D mesh back panel, thickly padded shoulder straps and huge waist support design can effectively relieve shoulder pressure and reduce fatigue during travel.With a one-hand adjustable shoulder strap design, the upper part of the shoulder strap is also fitted with load lifters to meet the needs of different carrying conditions.Adjustable and detachable chest buckle is designed as a safety distress whistle for emergency use.One hand operation trekking pole attachment is convenient and detachable.The front elastic hanging rope can effectively improve the loading capacity.The Z-shaped webbing straps on both sides can be used to control the shape of the backpack and bundle items according to the load. Durable Fabric Made of high-density 600D polyester fabric, which is anti-tear, wear-resistant and also coated with PU800 that is super water repellent and anti-seepage. (Not Waterproof) Huge Waistbelt Pocket Our huge belt pocket is larger than all others, and is big enough to hold most common items, including all mobile phones (of up to 7inches). MOLLE Expansion System The MOLLE webbing system supports the expansion of practical attachment tools and small bag as a whole. Anti Thieft Ring The secondary compartment is designed with an anti-theft ring to prevent valuable items from being lost or stolen. Built-in Rain Cover A built in reflective rain cover in the bottom pocket with a fastening buckle to avoid being blown off by the wind, and ensure safety when cycling, running and night walking. SKYSPER Exclusive Survival Guide SKYSPER outdoor SOS guide is built into the main compartment, containing useful survival knowledge in case of emergency. Large Capacity Compact design with scientific packaging innovations improve the maximum loading capacity, making it perfect for 1-2 days of travel. 15L Backpack 20L Backpack 25L Backpack 30L Backpack 35L Backpack 50L Backpack Buying Options Add to Cart Buying Options Add to Cart Buying Options Add to Cart Customer Reviews 4.4 out of 5 stars 754 4.6 out of 5 stars 3,640 4.6 out of 5 stars 371 4.4 out of 5 stars 515 4.6 out of 5 stars 1,118 4.4 out of 5 stars 230 Price $24.59$24.59 $34.95$34.95 — no data $43.99$43.99 $36.18$36.18 $50.57$50.57 Capacity 15L 20L 25L 30L 35L 50L Foldable X X X X X X With Rain Cover X X ✓ ✓ ✓ ✓ Padded ✓ ✓ ✓ ✓ ✓ ✓ Water Resistant ✓ ✓ ✓ ✓ ✓ ✓