1.[ Rain-proof fabric to reduce rainwater infiltration]-The car bag is a sewing product, which is not completely waterproof, and should not be caught in rain and rainstorm for a long time, and cannot be soaked. 2.EVA is fitted with PU material, and the hard shell is formed by cold pressing technology, which can resist compression and shock absorption and enhance the protection of contents in the bag. 3. Easy to take items, built-in interlayer, get rid of clutter, big organ mouth, prevent items from falling; Large internal space, double compartment, convenient to store items, get rid of the messy front mesh bag, convenient to put items, key buckle design, to prevent the key from being lost and difficult to find. 4.4 self-adhesive hook and loop straps, easy to install, stable and safe to extend the straps, trimmable design, suitable for a variety of different sizes of handlebars. 5. The front reflective LGOG and the side reflective safety warning pattern enhance the safety warning function when traveling at night.