610ml High-Capacity Hydration: Features a 0.61L water bottle, providing ample hydration for long-distance road cycling or intense MTB trails, reducing the need for frequent refills. Tool-Free Down Tube Mount: Designed for secure down tube installation. The press-fit design allows for quick, tool-free setup, ensuring universal compatibility with most standard bicycle frames. Lightweight & Durable Build: Constructed from high-quality, crack-resistant plastic. It offers a strong, secure hold for your bottle while keeping overall bike weight low. Sleek Aero Design & Color Options: Available in Black, Gray, Transparent, and White. The aerodynamic profile reduces drag, while the color variety allows you to match your bike's aesthetic. Quality Assurance: Manufactured in Mainland China to strict quality standards. This single-pack unit (30x10x10cm, 0.16kg) contains no high-concern chemicals and is ready for immediate use or as a direct replacement.