The Mandible isn't just Arundel's best-selling model -- in our estimation is the finest bottle cage on the planet. Its grip is unmatched, and it's great in extreme situations. Mandible cages have weathered the Grand Tours, the Spring Classics, Worlds, all of it. And gravel? Not a problem. Your bottles come out when you want a drink. They don't pop out when you hit the nasty stuff. Durable and elegant. 28 grams.