In both 6" & 12" sizes. They are 100% all natural chews. These treats are free of additives or chemicals and are not smoked to hide any odor. These chews are from South America free ranging stock and are not from hormone and steroid filled feed lots. They are USDA approved. Bully Sticks are high in protein and low in fat offering dogs a long-lasting all natural chew. They will help reduce tartar and promote healthy gums in your dog.