PRODUCTINTRODUCTION West BIKING bicycle top tube bag has a simple shape and is suitable for most bicycles. The streamlined appearance fits the frame to reduce wind resistance, and the narrow sides are not easy to touch the legs. The hook tape is easy and quick to install to protect the car paint, and the waterproof zipper closes smoothly,safe Use Light Rain. Brand：WEST BIKING Product Name：Portable Bicycle Tube Bag Material：Nylon+1000D High Strength Yarn layer+Polyester Fiber Capacity：About 1L Compact & Lightweight：Extract Easily，Easy Convenient 1000D High Strength Yarn interlayer：Durable Tough Two Installation Methods：Strap Installation Suitable Various. Screw Installation Suitable Gravel Road Bike Adhesive Waterproof Zipper：Adhesive Waterproofing, Better Waterproof Performance Riding without Hitting Legs：Narrow edges fit the frame to reduce wind resistance