Men's and women's casual travel backpack, waterproof, lightweight, large capacity, nylon material, color-block pattern

This backpack is designed for men and women and is suitable for casual travel. It has a capacity of 20-35 liters, is lightweight, and made from durable material. The backpack features a waterproof function and a color-block pattern. The inner compartment is made of polyester, and the exterior includes machine stitching design elements.