Water Bottle Cages by FIDLOCK. Details:Twist single bottle 800 without bicycle holder, colour: clear 800 ml Drinking Bottle for magnetic-mechanical bottle holder system. The Twist bottle with 800 ml capacity for extra long rides. Easy squeezing thanks to soft material and ultra-secure hold thanks to Belt-Only technology, consisting of a flexible and durable belt, which is screwed to a special connector. Of course, the Twist bottle 800 is still compatible with all Twist bases.