SPORN MARROW CHEW BONE Sporn® Durable Marrow™ Chew Bones are chewable nylon bones with "Flavor Down the Middle!" Perfect for strong chewers, nylon shavings act like a toothbrush and help remove tartar from the dog's teeth. Unlike traditional rawhide bones, this bone will last! Marrow™ Chew Bones are available in 5 sizes to suit every size dog. Features & Benefits Encourages non-destructive chewing habits Durable and long-lasting Helps remove tartar from dog's teeth Peanut Butter flavored Multiple sizes available to suit every sized dog Ingredients Water, Maltodextrin, Acetylated Distarch Adipate, Vegetable Oil, Starch, Caramel, D-xylose, Flavor, Salt, Nisin. Sizing Information X-Small: Recommended for dogs under 10 pounds (.75" x 3.5") Small: Recommended for dogs between 10-25 pounds (1" x 4") Medium: Recommended for dogs between 25-40 pounds (1" x 5") Large: Recommended for dogs between 40-80 pounds (1" x 7.5") X-Large: Recommended for dogs over 80 pounds (1.5" x 9")