With the Pulse A2 Bottle Cage Zefal offers a high quality bottle cage at a low price. It features a sleek, crafted finish and is lighter than the majority of carbon bottle cages while offering a secure grip on the bottle thanks to the thermoplastic clasp. Key Features: Lightweight: Only 26g, Elastomer Clasp: Holds the bottle and limits vibrations, Optimal Design: Easy bottle insertion and removal, Universal: Adapts to different bottle diameters,. Tech Specs: Material: Technopolymer resin frame. Flexible thermoplastic clasp,Weight: 26g.