This lockable blue bondage collar is 1-1/4" wide and is fitted with 3 thick Dee Rings in the front and sides.  The dee rings are welded and very thick at 5.2mm thickness.   

In the back of the leather bondage collar is your choice of buckle. You may have a standard non-locking buckle, or a padlock stud w/lock option. If you choose ‘padlock stud w/lock’ option then the collar will come with a chrome padlock stud system in the back where to the holes of the collar will fit over the top and onto the padlock stud and your choice of lock which can lock you in place. Only the Guard padlock and the Small Heart (silver, gold, copper or gunmetal) will fit through the padlock stud. I automatically provide the Guard Padlock, but you can choose one of the hearts during the checkout process after you add to cart.

This lockable bondage collar is available in several colours and leathers. The main photo is showing the royal blue. The top leather is a royal blue leather upholstery hide that I get from the Napa Valley. It is a very vibrant smurf blue. This hide is bonded to a black "super soft hide" that is chrome-oil tanned for a struck-through dye penetration. It has a more pronounced pebble grain to it which gives in texture and a sumptuous feel against the skin!! Its very lush. Feel free to read about all of the different leathers I use in me Leather Information page. All in all the collar is about 10oz thick (3--3.2mm) The combination of hides makes for a very strong bonded collar.