Double the Strength, Double the Security with the Double Up Dog Collar. Cleverly crafted to be both durable and comfortable, the Double Up dog collar adds extra security for dog walking while "doubling" as a perfect solution for escape artists. It is built with two stainless steel D-rings. Attach your leash to both D-rings. These two double D-rings will take the pressure away from the easy access buckle. This collar is made from the highest quality materials, it is non-rusting. It features our Soft Touch Nylon Webbing for comfort and reflective stitching is incorporated for nighttime safety. Included is an ID attachment is included for your dog’s tags. SM 8.5"-11.5" (.5" Wide) MD 11.5"-16" (.75" Wide) LG 15.5"-23" (1" Wide) XL 18.5"-28" (1.5" Wide)