Downtown Pet Supply Deluxe Adjustable Thick Dog Collar, (Blue, Red, Black, Purple, Pink - Small, Medium, Large, or X-Large) Deluxe adjustable dog collar with metal buckle and D-ring This collar is 1 inch in width and adjust to fit necks 15 to 19 inches in circumference Made from soft yet durable polypropylene - does not absorb water and is mildew resistant Matching leash also available By Downtown Pet Supply Deluxe adjustable dog collar with metal buckle and D-ring Made from soft yet durable polypropylene - does not absorb water and is mildew resistant Small: 1/2&#034; of an inch in width and fits necks 12&#034; - 15&#034; inches in circumference Medium: 3/4&#034; of an inch in width and fits necks 13&#034; - 17&#034; inches in circumference Large: 1 inch in width and adjust to fit necks 15 to 19 inches in circumference X-Large: 1 1/4 inches in width and adjust to fit necks 19 to 24 inches in circumference