The Payback bike seat security system locks down your seat post and saddle with Fortified security bolts. If either are ever stolen, we'll replace them with a brand new one. That's a Fortified promise. Basic Payback seat post security is only $15. Add $10 for a saddle bolt which enables your anti-theft guarantee. The key to the Payback is in its proprietary tool for unlocking. You can unlock and adjust your seat in a snap, but would-be-crooks are left scratching their heads.
Payback accommodates all 5 of the major seat post sizes, and all modern saddle bolt sizes (if you have an old bike with a horizontal bolt, sorry!) So unless your post and saddle are super unique, you're covered!
*** PLEASE MEASURE CAREFULLY - ALL SALES ARE FINAL