Made from 100% Virgin Nylon, tested on the most vigorous chewers. Uniquely infused with irresitible flavours right through the core, your dog will never get bored, as the flavour will last the life time of the bone. Tastybone uses human grade synthetic flavouring, herbs and spices, ensuring completely safe to chew on and suitable for dogs who may suffer from allergies or intolerances. No meat, dairy, wheat or additives, and zero calaries. Ingredients - 100% Virgin Nylon, Synthetic Flavouring