TheBontrager Bat Bottle Cage. Bolt on the Trek Bat Cage before your next cyclocross race or gravel grinder. The contents of your bottle may look like a whirlpool, but on the outside it's nothing but smooth sailing. BontragerBat Bottle Cage Features A durable composite material keeps bottles in place on the roughest terrains 48g
Best Price: £9.99 from Leisure Lakes Bikes