The Rib Cage II is not only a sleek, lightweight water bottle cage, but it&';s also been designed to be fast in the wind. Of course, it also performs its primary task of holding tight to bottles dutifully, so you won&';t be losing bottles when the road gets rough. SWAT(TM)-compatible design allows for storage and tool integration. Super-low bottle position improves the aerodynamic profile. Tuned compression design provides a secure bottle retention with easy in-and-out accessibility. Reinforced composite material improves durability without adding weight. Sleek, minimalist design with razor-sharp graphics. Accepts SWAT(TM) Cage Mount Road or MTB Tool. Accepts MTB SWAT(TM) Box (when used on compatible frames).