PRADA nylon black pet dog collar necklace in black. Size is M: M size Length: 30.5cm / Width: 4cm / Circumference: 33-42cm Used only a few times for outings, so it's in relatively good condition, but please understand that it is a used item. There may be slight fraying of the threads. *Instant purchase OK! *Please be sure to check the detailed sizes with each brand.