Ultra Light and Strong Material: 100% FULL 3K carbon fiber material - Incredibly strong and light (only 232g), non-deformable and corrosion resistant. Effectively reduce weight for long-distance travelers. Advantage: Holding power keeps the bottle in place when riding in rough terrain. Easy installation and removal. The unique and slim design makes it easier for you to access your water bottle while riding, allowing for easier and smoother bottle insertion/removal. The bottle cage fits most standard-sized water bottles: The carbon bottle cage has a diameter of about 3.15 inches (8 cm), fits a water bottle with a diameter range of 2.83 to 2.91 inches (7.2 to 7.4 cm). The drink bottle holder is suitable for most types of bikes, such as MTB/road bike/folding bike and it is very suitable for all cyclists who are looking for an elegant cage to lighten their load while riding.