Features34 waterproof u zipper closure for easy access to inside items and better protect from wetfabric padding cloth inside the bag to protect items from damage and net cloth on two side prevent items from accidental droppingquick release buckle design mounting for various bicyclesvelcro to fix in the rear seat pole make it more stablesliver grey reflective stripe safer for riding at nightalong with a hanging ring for convenient to hang on your other bag