All water bottle cages are not created equal. Like everything else in the bike industry, water bottle cages and their technology have changed for the better over the years. They are now lighter, more durable with sleek, minimalist designs with razor sharp graphics to mix and match up with your bike frame. The Specialized Rib Cage II leads this trend with cutting edge technology and design. A Swat compatible design allows for storage and tool integration. A super low bottle position improves your aerodynamic profile when you are looking to streamline your times. A tuned compression design provides secure bottle retention with easy in and easy out accessibility. Reinforced composite material improves durability without adding extra weight. The Rib Cage II tips the scales at a scant 33 grams so it won't add any extra weight that you can feel to your bike frame. But most importantly, after writing about all of the tech about the Rib Cage II, the bottom line is that all bottle cages are measured against holding your water bottle tight, regardless of how rough things get underneath your wheels. The Rib Cage II does this in spades and will never let you down. Whether you are road, mountain, cyclocross, downhill or enduro racer, or even a bike commuter or just a casual rider around your neighborhood, go with a water bottle cage like no other, with the Specialized Rib Cage II.