5 Rows Rivet Alloy Punk Dog Collar Leather Studded Anti-bite Pet Collar for Big or Medium or Small Pet Premium PU leather, comfortable and durable. Please measure the circumference of your pet's neck and then add about 1" for wiggle room XS:15-18 INCH, S:17-20 INCH, M:19-22 INCH, L:21-24 INCH. 5 hole adjustment, to adapt to pet any weight status. Please check the size before you confirm the order.