Size: Small and Medium available ONLY! The dog collar does not stretch itself, non-slip adjustable loop can easily adjust the size. Please make sure leave ONLY 2 fingers between collar and dog neck. Safety Metal Buckle Collar: Instead of a plastic buckle, the quick release buckle is made of heavy duty anti-rust metal buckle with no sharp edges for greater durability and wear resistance. The buckle is very sensitive, it only needs to be squeezed to bounce and it is strong enough to prevent the dog from breaking free, could save more time when going out. Highly Reflective Dog Collar: Reflective triple needle stitch to keep high visibility at night for safety. Perfect for early morning and evening walks, runs, jogs, field work or as a hunting dog collar. Soft Neoprene Padded: There has soft padding from inside that will protect your dog’s neck from irritation when being active. We double box stitch at all pressure points for added strength, has undergone a tensile test to ensure the safety of the dog. Each dog collar easily dries and is odor resistant, colorfast dye means no need to worry about odor or your dog playing in the water. Easy to Use : Machine washable, this classic yet stylish nylon collar will make your dog look more stylish while travelling and daily walking. It won't break or fray as easily as plastic collars. Anti-rust D-ring on the collar can be matched with leashes and other accessories.