BBC-37 Bottlecage Fibercage UD Carbon Matt BlackThe unique design of this bottle cage holds the bottle in place, but makes it easy to take the bottle out by allowing some flexibility towards the sides. The UD carbon makes this bottle cage extremely light and therefore adds only a feather to your bike. Features UD carbon fiber bottle cage Unique design holds water bottle securely while allowing fast and easy bottle retrieval Extremely lightweight, only 24 grams