Premier Quick Snap Collars RED GREEN DS, Size: MEDIUM Premier Quick Snap Collars is great for dogs Its a simple adjustable alternative to the traditional buckle pet collars They are easier and quicker to put on and take off. The adjustable feature allows you to simply fit many size necks. Made of the highest quality material and includes a gold paw pendant Small (3/4"w) fits 10"-14" for dogs up to 20 lbs MEDIUM (3/4"w) fits 13"-20" for dogs up to 50 lbs LARGE (1"w)fits 17"-28" for dogs up to 90 ls