The new S-Works Carbon Rib Cage III keeps the 100% FACT carbon fibre construction of yesteryear, but it ups bottle retention for super rough roads. The split design also provides pre-load to hold bottles securely, while making bottle entry as easy as possible.Key Features: FACT carbon construction creates a splendid fusion of strength, optimal bottle retention, and light overall weight.,Super-low bottle position improves the aerodynamic profile.,Tuned compression design provides secure bottle retention with easy in-and-out accessibility.,Weight: 24g.