The Specialized Rib Cage II 3K Weave Carbon is a no-nonsense, aero-conscious bottle cage built for riders who count grams but refuse to compromise on hold. At just 39g a pair, this top-load setup uses 3K carbon fiber to blend lightweight performance with durable, race-day grip. The low-profile arms cradle bottles securely through high-speed descents and rough roads, while the subtle carbon weave finish adds a touch of understated class. Whether you're chasing watts or just keeping it clean and efficient, this cage pair delivers dependable function with minimal fuss.