really good idea I haven’t seen any in the market with the two bottle cage additions. However now the bad. The screws provided don’t have any indication of the torque setting. The two long screws that screw into the plate that sits behind the saddle rails could be longer as the two rubber tubes that are provided to go on the rails make it hard to screw in. I’ll add that the two rubber tubes provide are a good idea, however. There is no mention in the instructions of where they go. The plate that I mentioned before is designed to only work with specific saddle rails. May I suggest that you give dimensions online so people can measure before ordering. Overall I like the product but less mechanically minded people may struggle when fitting.