The new TWIST bottle 590 comes in a new design and with an improved connection technology that provides a strong hold on every ride. The ergonomic design with the rounded edges offers a bigger frame compatibility and makes the twisting off and snapping to the TWIST base even more intuitive. The new bottle cap with a high flow valve is self-sealing and leak-proof. It comes with an optional dirt cover, so the mouthpiece stays clean even when mounted on the downtube. But of course, the TWIST bottle 590 is still compatible with all TWIST bases and the connector which makes a bottle upgrade easy at all times. This is for the 590ml bottle only and does not include the base required for connecting.