Sturdy 3mm thick black rubber harness with a 50mm metal cockring.
Three adjustastable buckles at both sides and back can optional be equipped for locking with a padlock.
If you also want to attach a - separately available - plug also " unremovable ", then you need a fourth lock.
You can find the matching plugs under item numbers 73103 and 73104.
Please take notice of the size chart.