The Blackburn(R) Slick Bottle Cage is a necessary bike accessory. The bottle cage's aggressive style conforms to MTB or road bikes so your hydration is close and secure. It doesn't add extra weight to your ride because it's made of super light poly-carbonate. FEATURES: 27 g. is super light poly-carbonate Aggressive style conforms to MTB or road bikes Lifetime Warranty For additional information relating to the Manufacturer's Warranty, please contact 1-800-456-2355.