Padded Leather Locking Posture CollarThis collar is made with thick leather padding that feels comfortable and secure around the neck without being too constrictive. It locks in place with a buckle that could have a lock attached. There's also a half ring in the front, so you can attach a leash and lead your sub around the room or even down the hallway and around the block. This collar fits necks from 16 inch to 18in This collar is made with thick leather padding that feels comfortable