?Premium Material and Strong Internal StorageThis bike bag is made of high-strength EVA with 3D die-casting process, which makes the bag have tear resistance and high abrasion resistance. The rigid carbon fiber exterior retains its shape and perfectly protects what's inside, you can store items sorted from the grid's interior compartments ?Rainy Weather Waterproof MaterialMade of PU carbon composite material with double-sealed zipper to protect your belongings in rainy days. In case of heavy rain, an additional rain cover can be used. You can use headphones or a charging cable through the adjustable hole between the double hinges. ?Triple Velcro and Reflective Logo FixingThe bicycle saddle bag adopts three strong adhesive Velcro straps, which can be firmly fixed on the top tube, suitable for most bicycles. It's easy to disassemble and won't move on rough roads. Reflective logo on the bag will increase nighttime visibility when riding at night