Our exclusive harness is 100% leather. On the body of the harness it has 26, 7 mm Swarovski Crystals, the heart shaped setting is also filled with genuine Swarovski Crystals and our exclusive “no tangle O ring”. The O-ring swivels to avoid the leash getting twisted and makes for a more controllable walk with your dog. This O-ring was custom designed and constructed specifically for this harness. It is available in three sizes.