Reflective Dog Collar Adjustable Small, Medium, or Large - NEON Includes 1 Reflective NEON Collar with 3 Sizes to choose from Adjustable- Small 10"-16", Medium 14"-22", and Large 18"-27" Width Measures 3/8-inch for Small, 3/4-inch for Medium, and 1-inch width for Large Made of durable, woven nylon. Quick-release plastic buckles Heavy-duty hardware. Nickel-plated D-rings for lead attachment