Real Carbon, Real Light, Real Sweet.
Super light, real delicious carbon (not plastic that looks like carbon,) attaches securely with the included bolts and washers, has just enough tension to hold my water bottle securely without making it hard to replace the waterbottle without looking down.
To be honest, I am juuust bike-nerdy enough to disklike the idea of putting an ugly aluminum bottle cage on my beautiful carbon bike.
I'll probably get another one for the same bike when summer rolls around. BOOSH!