Hi DudeYes it's an old Famsa tank bag that zips onto a base that used to attach with straps.... Just cut off the straps and bolted the base to the seat cover.... Dont really like wearing rucksacks etc... so it was just to put a few things in on the commute... I'll get some fotos taken.. The seat is cut away under the cover and then the cover locks down on a key... The mechanics are a bit Heath Robinson... But it has worked for many years now....