This is a harako leather collar for medium-sized dogs. It's a sample item, so it's priced cheaply. This is a one-of-a-kind finished product. If you want a different size or color, please order from Rakuten or Yahoo! Shopping. ● Size: Leather width: 2cm Thickness: approx. 4mm Neck circumference: 30cm **Please measure your dog's neck circumference before ordering (allowing for about one finger's width of extra space). Holes are: ● 302 ● ● ● (1.2cm intervals) Please confirm. **Measure from the edge of the leather (not from the edge of the buckle hardware). +++++++About Extra+Heavy+++++++ Extra+Heavy is a handmade collar shop that specializes in custom-made collars, including half-choke collars and leads, mainly for bulky collars for breeds like bulldogs and long-necked dogs like Italian Greyhounds. The sites are Rakuten Shop, Yahoo! Shop, and the main store. * You can find Extra Heavy by searching for "collar studs" on Rakuten Shop and Yahoo! Shopping Mall.