This elegant collar is a great accessory for any outfit. Subtle and refined, it can be worn during the day during work or at night with a lover. The silver O-ring is a subtle and beautiful accent on this black, leather collar. With adjustable clasps, this collar can be adjusted to the perfect fit. The PU leather collar has a smooth, real leather look on the outside and a soft inner lining that faces the skin. The metal O-ring is placed at the center of the collar and is nickel-free. Adjustable clasp is made of a lobster clasp and chain for the perfect fit. Measurements : Overall length: 16.25”, Adjusts from 12.5” to 15.5” circumference, O-ring inner diameter 0.75” Materials : PU Leather, metal Color : Black, silver metal