Z-Ridge dental bones feature an exclusive ridged surface and the ideal density for longer cleaning time. Z-Ridge helps fight "doggy breath" with naturally powerful chlorophyll, found in the dark specks and streaks of alfalfa concentrate, plus a healthy blend of nutmeg, clove, parsley, fennel seed, carrot flake & beta carotene. Wheat-free and corn-free for dogs with allergies or sensitivities. Sold Individually. Size 2.25"