Giant bottle cages. Designed to fit snugly against the frame of their Propel aero frame. Originally designed specifically for the Propel, the bottle cages' aerodynamic performance was so good, and the mounting screw positions were similar to standard bottle cages, that some athletes have been customizing them to fit other companies' aero frames. The material is carbon fiber, making them lightweight. The shape differs between the seat tube and down tube versions, and this is a pair. Highly recommended for Giant Propel, as well as other companies' aero frames. Shipping will be on the same day or the next morning. #giant #propel #ジャイアント (Giant) #プロペル (Propel) #ボトルケージ (Bottle cage) #エアロフレーム (Aero frame)