Our slim line rubber collar is more subtle than our heavy duty rubber collar since it uses only 1 steel d-ring for an attachment. Strong enough for serious bondage use but discreet for outside wear. Closes by means of a steel non-locking rear buckle. Built to have the durability and strength of collars twice its price. Rubber is easy to clean compared to leather so no worries about being messy. <br><br> Collar fits necks from 13.5 inches to 18.5 inches.