Avenir Recent Questions, Troubleshooting Help & Support

A great site to assist you is "sheltonbrown.com". He goes through the process step by step.

There is an adaptor the does the trick. Its available on ebay, amazon or at your local bike shop

This is a seat post mounted bag, with attachments for the rails (2) on the bottom of the seatpost.1. The straps going over the top of the bag will have to come apart. Removing them from the loop they pass through before re-attaching with the velcro. 2. Undo the straps and then feed them over the metal seat rails. 3. Re-assemble the straps in the same manner they were before and loosely attach the velcro. You will later tighten up the tension on these straps to snug the bag up under the seat.4. Attach the velcro strap on the posterior of the bag to the seatpost.5. Now the bag should be supported by the seat post strap and the seat rail straps (2). Hanging loosely and oddly from the seat area.6. Tighten/snug the straps from step three, so the bag is drawn up against the bottom of the seat. Try adjusting all the straps on the bag until the bag appears to sit well under the seat.7. DONE