Ultra-light and strong material: 100% full 3K carbon fiber material - extremely strong and light (only 25 ± 2 grams), non-deformable and -. Effective weight loss for long-distance travelers. Pros: Retention force keeps bottle in place when riding over rough terrain. Very easy to install and remove. and slim design allows easy access to your water bottle while driving, and allows for easier and smoother insertion/removal of water bottles. Bottle Holder Fits Most Standard Size Water Bottles: Carbon Bottle Holder measures approximately 3.15 inches (8 cm) in diameter and fits water bottles ranging in diameter from 2.83 to 2.91 inches (7.2 to 7.4 cm). The drink bottle holder is suitable for most types of bicycles, such as mountain bikes/road bikes/folding bikes, perfect for all cyclists who want an elegant cage to facilitate their loading while driving. Color: Black Material: carbon fiber Package Contents: 2 x Water cup holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Ultra-light and strong material: 100% full 3K carbon fiber material - extremely strong and light (only 25 ± 2 grams), non-deformable and . Effective weight loss for long-distance travelers. The drink bottle holder is suitable for most types of bicycles, such as mountain bikes/road bikes/folding bikes, perfect for all cyclists who want an elegant cage to facilitate their loading while driving. Very easy to install and remove. and slim design allows easy access to your water bottle while driving, and allows for easier and smoother insertion/removal of water bottles. Pros: Retention force keeps bottle in place when riding over rough terrain. Bottle Holder Fits Most Standard Size Water Bottles: Carbon Bottle Holder measures approximately 3.15 inches (8 cm) in diameter and fits water bottles ranging in diameter from 2.83 to 2.91 inches (7.2 to 7.4 cm).