Commuter Bag Modification I added an airline seat belt buckle to my commuter bag! Check it out here. My venerable bag Old adjustment mechanism Old "buckle" Damned expensive Seat Belts Inside my seat belt buckle Springs! Clever mechanism Clever Mechanism Estimating where to cut The scary part: cutting it Fuse the ends Thread the strap through Before, back side Before, front side Unthreading the old belt Male end, back Male end, front Threading through Ready to sew Ends sewn on Ends sewn down Yay! Seat Belt Buckle! Fits just as well as before looks mostly the same this way... adjustable! detachable! Lift