Perfect for strong chewers, nylon shavings act like a tooth brush and help remove tartar from the dog's teeth. Unlike traditional rawhide bones, this bone will last! The large wishbone shape allows for easy gripping while providing hours of chewing satisfaction and also serves as a great interactive toy for you and your canine companion. For Medium - XLarge dogs Ingredients : Rice Flour, Pea Flour, Vegetable glycerin, Calcium carbonate, Dried brewers yeast, Natural and artifical flavors (vegetable oil preserved with TBHQ), Sugar, Potassium sorbate (preservative), Caramel 13cm width 19cm length Please monitor your dog for safe chewing at all times. Although MarrowChews are non-toxic, they are not intended for consumption. If any tiny pieces are ingested, they should pass safely; there is no need for concern. Discard bone if it appears a large piece could break off. Larger chunks may not pass safely if ingested.