Features1Our hiking backpack is made of Oxford cloth material, which is waterproof and tear-resistant. 2All stress points and straps of the backpack are reinforced with loop knots to ensure long-lasting durability. 3The hiking backpack is designed with convenient trekking pole attachments. The open front insert also accommodates different hiking gear and multifunctional extenders. 4Comes with a safety whistle, making it the hiking backpack for outdoor activities. 5To keep your back cool during outdoor activities, our backpacks feature multi-slot breathable back panels and shoulder straps.SpecificationThe 20L day bag is a must-have for outdoor activities such as hiking, running, traveling and Cycle. As a 20L backpack, it is also suitable as an airplane carry-on bag, freeing your hands when boarding the plane. Features:Our hiking backpack is made of Oxford cloth material, which is waterproof and tear-resistant. All stress points and straps of the backpack are reinforced with loop knots to ensure long-lasting durability. The hiking backpack is designed with convenient trekking pole attachments. The open front insert also accommodates different hiking gear and multifunctional extenders. Comes with a safety whistle, making it the hiking backpack for outdoor activities. To keep your back cool during outdoor activities, our backpacks feature multi-slot breathable back panels and shoulder straps. Specification:Material: Oxford cloth Color: Black Orange Lake Blue Sky Blue Purple Dark Blue (optional) Size: 25*13*40cm 9.8*5.1*15.7in Weight: 320g 11.3oz Package list:1 * backpackPackage List1 * backpack