Staying hydrated is overrated anyway. Use that water bottle holder for something more useful, like tools! This kit has everything a cyclist would need—minus the water, of course. It includes a bit screwdriver handle, 6-15mm ball wrench, six driver bits, three hex key wrenches, two tire levers and tire patch kit with glue. It's available at Lillian Vernon for $20.
Product Page [Via Boing Boing]
Advertisement