This storage bag is made of ABS and EVA materials, which is drable and safe for a long time use. Designed for comfort and convenience, the backpack is equipped with padded shoulder straps, and you can change the straps according to your habits and height. It will be a nice helper when you are on a trip. Features -Color: Black -Material: ABS+EVA -Size: About 31.5x25x14.5cm/12.40x9.84x5.71inch - Made of ABS and EVA materials, which is drable and safe for a long time use. - Comfortable and portable, ergonomic, labor-saving, no burden. - Adjusting the straps according to your habits or height. - Waterproof, wear-resistant, lightweight and shockproof . - The surface is made of hard and durable ABS . - The back is made from Oxford fabrics and it feels comfortable.