MINOURA's SBH-300, a bottle cage mount (for 2 cages) that attaches to the saddle, is a convenient item that allows you to attach an additional bottle cage to the back of the saddle.
It weighs only 135g and is in an aerodynamically suitable position. (Written by Circles or this w) Includes screws for attaching the bottle cage.
It can be attached to the standard dual rail type.
Includes bottle cage mounting screws
Only standard dual rail type can be installed