The lightweight Blackburn Carbon Fiber Bottle cage has a flared mouth to improve ease of bottle insertion. Its unique reinforcing side ribs increase stiffness to boost strength and bottle grip. The lower cradle/bottle stop area is designed to provide more support for critical strength in an area where other carbon cages have fallen short. Optimized for an ideal balance between quick bottle access and optimal bottle grip. Backed by Blackburn’s Lifetime Warranty. 32 grams. Carbon Black.