Bicycle Bottle Holder Full 3k Carbon Fiber Super Light Road/Mountain Bike Cycling Water Bottles Cage Holder Matte Glossy 16g

I've ordered lots of different bottle cages and these are the best in my opinion, hold even large bottles very well. They are close to the design of the Bontrager xxx cage. About 18g if you go lighter than that there is always some compromise. The first one is my favorite.