The Fidlock TWIST 450 Bottle + Universal Base is a compact, universally compatible hydration system engineered for narrow frames and challenging bike geometries. It combines a 450 ml bottle with FIDLOCK&';s magnetic-mechanical Uni Base for secure, twist-release operation across all bike types. Designed for riders who require reliable hydration in compact or unconventional frame setups, the magnetic-mechanical system ensures the bottle snaps securely into place and releases only with a deliberate twist. The flat Uni Base adapts to any tube diameter or shape, providing universal compatibility from children&';s bikes to full-suspension mountain bikes. The bottle features a leak-proof, self-sealing high-flow cap, with an optional dirt cover to keep the nozzle clean in rough conditions. Constructed from BPA-free polyethylene with a smoke finish, the system is dishwasher safe for easy maintenance. Key Features Universal Frame Compatibility: Magnetic-mechanical Uni Base fits virtually any tube diameter or frame configuration Advanced Sealing Technology: Leak-proof, self-sealing cap with high-flow valve and optional dirt cover Durable Construction: BPA-free polyethylene, dishwasher safe, smoke finish