1. Made of PVC net clamping cloth, provides the best waterproof performance to protect your valuables from water, dirt, and dust. Durable, solid and easy to clean. 2. U-shaped and roll top closure, no zipper design, the capacity can be adjusted from 2L-3L to meet your needs, great for cell phone, camera, personal goods and some gadgets storage. 3. With three adhensive straps on the back, and adhensive buckle design on both sides , easy to fasten and install it on bike, also can quickly remove from your bike. Suitable for mountain bikes, road bikes, folding bikes, etc. 4. Two kinds of usage: Bicycle handlebar bag and shoulder bag. With buckles on both sides, along with a shoulder strap, can be used to carry the bag anywhere after removing from bike.