Especially with narrow frame geometries, this bottle is a perfect option. The popular design language and grippy ergonomics for intuitive handling have been adopted, as well as the removable dirt cap and the self-closing membrane with large water flow.The TWIST bottle revolutionized the bike bottle. Without the conventional bottle cage this magnet-mechanical bike bottle system offers a new kind of freedom in handling and application. It is simply released from the bike with an easy 'TWIST' movement and just as easily reattached by bringing together the magnetic bolds, which include a mechanical locking system. The bike base is mounted on the bike to the bottle braze-ons with two screws.Key Features: 750 ml volumeCompact design with large volume for tight framesEasy squeezing thanks to BPA-free polyethyleneHigh flow rate and leak-proof diaphragmRemovable dirt capDishwasher safe up to 50°CFits all TWIST bases