Product Description Material: Nylon Size: 24*41*16 cm Capacity: 15 L Color: light blue, green, black Quantity: 1 piece Package content: 1 piece * travel backpack 1. DURABLE: Made of high quality water-proof material, provides extra strength and long-lasting performance with the lightest weight possibly. Can be used for a long serving life. 2. BREATHABLE & COMFORTABLE: Breathable back material is specially padded with mesh for maximum comfort and heat dissipation. Adjustable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. The waist straps are designed to facilitate stress release and to ensure stability while cycling. 3. CONVENIENT DESIGN: External storage system1 external pocket with high capacity for umbrella, cell phone, key and other necessities, 1 zip pocket for helmet hood ,lighter and other small items, 2 mesh pockets on both sides to carry bottles; Internal storage system:1 thermal insulation pocket can store the water bladder, 1 main compartment. ; On the shoulder strap, there is an access for drinking hose and headphones. 4. VERSATILE: This backpack is an ideal sport backpack for all kinds of outdoor activities such as cycling, jogging, climbing, hiking, traveling, etc. It can be used as a reliable and versatile companion for your short journey or your sporting experience and daily use, also a great gift for everyone. 5. REFLECTIVE STRIPS & FOLDABLE : Bicycle backpack with reflective strips on the front and back for maximum safety at night. This sporty backpack can be folded in half, no kinks, it's easy to stow away.