These dog collars are the most durable collars on the market. Heavy oil treated brown leather with heavy-duty hardware. There's nothing better than natural material that breathes with the conditions. The more it's used the more comfortable and natural feeling it becomes. This collar has heavy-duty nickel studs and is availabe in sizes 19, 21, 23 & 25. For correct collar size, measure your dogs neck and add 4 inches. Plate space ideal for a printed plate sold separately but attached to collar free of charge. MADE IN THE USA!