The width of the dog collars are 1-1/4", and are easily adjustable featuring Delrin Acetal side release buckles for ease of fastening and separating and solid nickel plated D-rings for strength.  

Sizing:

• Small - 11" - 18"
• Medium - 12" - 20"
• Large - 15" - 24"

Contains Metal - Hand Wash Recommended to Preserve Integrity