The PSM Extreme Goodie Bone toy delights dogs that are the toughest of chewers and that delight in chew sessions. Made from the most durable PSM Extreme unique, natural black rubber formula this bone is designed for determined chewers. The PSM Extreme Goodie Bone also features patented Goodie Grippers that turn this entertaining toy into a fun treat dispensing challenge that can be stuffed with your dog's favorite kibble. Want to extend the chew session? Stuff with PSM Snacks and entice with a bit of PSM Easy Treat . Covered by PSM Satisfaction Guarantee. See PSM Satisfaction Guarantee document below for full details.