The bottlecage adaptor ANYWHERE from SKS can be combined with any bottlecage on the market and can be fixed at the handles or the mainframe tubes , fixed with velcro belts. A rubber layer at the inside of the velcro belt and the bottle cage prevents that the bottle cage holder can get out of place.
By the way, we use those bottle cages not only for carrying water. On hikes we collect cherries, nuts, blueberries and other fruits that we find on the way in bottles and carry breakfast cereals , dried fruits and other snacks in bottles and store them at the handlebar. Its a welcome snack during the hike.
Belts: Velcro, 330mm , will fit for tubes up to dia. 80 mm