Review on 🚲 CHUMXINY Bike Repair Kit: 16-in-1 Tool, 120Psi Mini Bicycle Pump, Tire Patch Kit – Ideal for Mountain and Road Bikes by James Duffield

Fits easily. As shown in the first picture, I had to use one of my old vape pins around the seatpost as it was too flimsy for the strap to actually tighten and relieve the other two straps. I see people complaining about nylon tearing. I think it's mostly because he's too loose that makes him bounce. I adjusted both straps on either side to be nice and tight. The velcro that goes around the seatpost isn't adjustable so I had to use an old vape pen. This widens the stance so that the belt is now nice and tight. Depending on the thickness of the seatpost, you may need to do the same. (It doesn't have to be a vape pen, it's just what I had. You can use whatever you want). So now everything is firmly in place and no longer jumps. I also recommend removing the pump and mounting it on the frame where the water bottle is located. It's less weight in the bag, so it might only help.