Description Sporn Durable Marrow Chew Bones are the chewable nylon bones with jerky flavour down the middle! 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! Sporn has a size for every dog. Size Guide (we recommend going one size up if your dog is an extra powerful chewer!): X-Small: Recommended for dogs under 4.5 kg (2.5cm x 3.5cm) Small: Recommended for dogs between 4.5-11 kg (2.5cm x 10cm) Medium: Recommended for dogs between 11-18 kg (2.5cm x 12.7cm) Large: Recommended for dogs between 18-36 kg (2.5cm x 19cm) X-Large: Recommended for dogs over 36 kg (1.5cm x 23cm) SKU: 122811000526 Additional Information Ingredients: Nylon and jerky flavor Manufactured In: United States Breed Size: All Life Stage: All Treat Type: Long Lasting Treat Category: Long Lasting Packaging: Pack Pet: Dog Product Category: Treats