1. This bike backpack is made of water resistant nylon, foldable night light bar, with ELMET mesh pocket, with survival whistle on belt, high quality zippers, high quality hardware, polyester fabric lining, soft and smooth, 18L large capacity, breathable back, water resistant nylon and excellent workmanship, vintage, fashionable and classic, perfect for motorcycling, cycling, mountaineering, outdoor sports. 2. Classic and fashionable, 1 x main zipper pocket, 1 x front zipper pocket, 2 x side zipper pockets, the special inner layer can be used for water bladder. This motorcycle gear with additional helmet net design, it fits easily on helmets. Such as motorcycle helmet, ski helmet, racing helmet, snowmobile helmet, basketball. 3. The bicycle backpack made of ultra-light, durable and tear-resistant nylon fabric provides extra strength and lasting performance with light weight. The ergonomic design makes your back more comfortable, the soft, breathable mesh pad on the back keeps your back cool and dry. You can use it as a bike backpack, casual daypack, travel backpack, mountain backpack, perfect gift for Christmas, New Year, Thanksgiving, Groomsmen, Birthdays, Father's Day. Features: Material: water resistant nylon. Dimensions (W x D x H): approx. 22 x 7 x 46 cm. Weight: approx. 600g Quantity: 1 piece. Warm tips: 1. Please allow 1-3cm error due to manual measurement. 2. Lighting, display and other factors may cause colour differences. Please determine comprehensive image and text descriptions. Package includes: 1 x Bicycle Backpack