The Fidlock TWIST 590 includes the Bike Base for mounting to standard braze ons. The Fidlock bottle is guided into place and snaps securely on the mount. The bottle is held with a combination magnetic/mechanical retention system that releases with a simple twist of the bottle. The 590ml bottle has a high flow valve that is self-sealing and leakproof, with a removable dirt cover, so the mouthpiece stays clean out on the trail.