The GoughNuts FlyNut Black is our newest design for interactive play. GoughNuts products are designed knowing that safety and fun go hand in hand. The GoughNuts FlyNut product is NOT FOR POWER CHEWING. Please rely on our GoughNuts rings for power chewing The FlyNut is designed for safety and function. A dogs identity in large part are its teeth. It is critical that interactive products and especially designed chew toys are safe for a dogs teeth. Again, THIS IS NOT A CHEW TOY. PLease utilize the products function for interactive play and then take it away for its next use. Do not leave the FlyNut laying around where the dog may want to chew it as it would a GoughNut ring. Yes - like everything we make, the product is guaranteed for your dog's safety. This product does not have a safety indicator. Thank you for your support of GoughNuts!