Tacx Griffid Bottle Hander:

Convenient and safe bottle hander

The Tacx Giffid is a convenient tool for safely passing water bottles during a race. Using this bottle hander prevents the bottle from falling from the persons hands taking it and causing a dangerous situation. The elastic on the Giffid is fixed around the lid and releases as soon as the cyclist takes the bottle. Various WorldTour teams now use the Giffid.