I had a side-opening version of this cage which I have had for years but never used. With a new bike which had a bare carbon lower half of the frame, I noticed my Arundel Side-Loader almost exactly matched the look of the carbon on my new ride; I just needed a partner for the down tube. A quick check and Bike Tart supplied the missing piece. And it's perfect - exactly matches my 12 year old Side Loader, and the bike. But it not only looks good, it functions great. Arundel are known for keeping a tight hold of your bottles whether bouncing over cobbles, rough tarmac, or a gravel sector and the Mandible doesn't disappoint. But it's still easy to pull the bottle out for slurping.