This waterbottle cage is made of nylon and weighs 33 g. It is flexible for easy removal and placement of wterbottles. It mounts to the seat tube or down tube where mounting holes are present. It includes 2 bolts to mount.

Easy removal and placement of waterbottles
Universal, flexible fit made of nylon
Includes 2 bolts to mount on the seat tube or downtube
Weighs 33 g
top or side removeable M-Wave BC33 Bicycle Water Bottle Cage Black 33 gram