- TOUGH ULTIMATE STRENGTH BASIC COLLARS PetiFine heavy duty dog collar with a metal buckle is built in premium 100% stainless steel and hardware. We have adopted a more sturdy knitted design webbing to make our collar stronger and thicker. The classic is always trustworthy, our collars are more secure and longer-lasting than plastic buckle dog collars. .- CONVENIENT SIZES FOR EVERY BREED Not just a large breed collar, this strong dog collar is available in 4 sizes to accommodate all dog breed sizes. Small dog collar: 11-14.5" Medium Dog Collar: 14.5-19" Large Dog Collar: 19- 23" X-Large Dog Collar: 24- 28". Select the correct size based on the circumference of your dog's neck. Measure around the neck where the collar would comfortably lay. . NEOPRENE PADDED INNER Our collar is lined with a soft neoprene padding that will protect your dog's neck from irritation when being active. This unique feature provides cushion and improved traction for maximum comfort during higher-level activities. . 360 REFLECTIVE STRAPS Stay safe and be seen on your early morning and evening walks, runs, jogs, or hikes with your dog. Our collars have reflective stitching that can improve security and can be seen more easily.