Flats happen. Make sure you're prepared with a Bontrager Flat Pack, a convenient and useful all-in-one pack containing tire-change essentials. Featuring the storage, inflation, and tire removal equipment you need to handle an emergency repair. OnGuard's Doberman combo cable lock is tough and easy to use! With the Doberman, all you need is your bike, the lock, and a number you can remember - no keys necessary!