Spessn Bicycle Water Bottle Cage, Alloy Carbon Fibre Cycling Bike Drink Water Bottle Holder Cage Rack Bracket,Black Constructed from lightweight heat-treated aluminum alloy Only 29g (1 oz.) Oval and ergonomic design helps to strengthen its hold, keeping bottles securely in place while providing easy access for riders Great for rides around town or for touring Perfect for those who want a stylish cage to lighten their load as they ride