• Metal Zippers & Polyester FabricDWQOO Women Stylish Backpack, Made of high-quality metal zippers and polyester fabric. Our backpacks are designed with ergonomics in mind, an adjustable chest buckle and sponge back pad help relieve the pressure on the shoulder and back. The anti-friction shoulder straps are durable and comfortable. The equipped dry and wet separation pockets can hold toiletries and wet clothes and are perfect for rainy day travel, weekend travel.