1. Multi-functional capacity bag, which can store articles by classification to prevent confusion and increase the capacity more effectively. 2. Comfortable and breathable-breathable mesh shoulder straps are equipped with a large number of sponge pads to help relieve shoulder pressure. Ergonomically thickened, widened and thickened S-shaped shoulder straps and high elastic breathable back and hip belt support provide the best ventilation and reduce the burden during travel. 3. Waterproof and durable-the mountaineering bag is made of high-quality nylon fabric, which is tear-resistant, scratch-resistant and wear-resistant. You can also use our rain cover (there is a rain cover at the bottom of our hiking bag) to further prevent water and dust from entering the backpack, protect your valuables from heavy rain and keep everything dry. 4. Features of the upgraded hiking backpack-When you pack a lot of things, the adjustable top cover of the backpack can be better adjusted to the right position. The bungee pocket at the top can also be wrapped in a wet towel or thin jacket.