Usually, leather and waterproof are an essential material for many backpacks. For leather and waterproof backpacks, a leather rucksack backpack is made from a variety of materials, such as cotton, polyester, and nylon, to keep everything from place to place. In addition, leather waterproof is an ideal material for outdoor backpacks, where it is important to maintain the originality of a backpack.
Some army rucksacks are made of cotton, polyester, nylon, waterproof, and high-quality materials, such as cotton. Polyester rucksacks are a popular material for waterproof backpacks, while polyester are made of cotton, nylon.