Rugged Design with Nickel Ring 3 Sizes to Choose From Officially Licensed NCAA Team Product Made in the U.S.A. Matching Leash Sold Seperately Zep-Pro "Pet Classics" incorporates unique styling and fuctionality to produce a truly personalized and elegant line of pet collars and leashes. To assure a safe and comfortable fit for your pet, place two fingers between your pet's neck and the measuring device and note the indicated length.