Material: Made of high-quality polyester, this backpack is waterproof and wear-resistant, lightweight and durable. Features: Adjustable shoulder strap can be adjusted to your comfortable length, large capacity design, it can help you store and sort school or work items, bring you convenience. Comfort: The back of the backpack is breathable and cool, reducing friction and giving you maximum back support. Breathable and adjustable shoulder straps reduce stress on the shoulders. Versatile: This backpack is perfect for use as a college backpack, it can also be used as a travel backpack, school bag, work backpack and leisure backpack. Date First Available July 15, 2024