Excellent product for tough chewers. What I like about the double-ended design is it's great for teaching dogs beyond basic training level to take the object in the middle, as the ends filled with treats serve as a distraction. For this reason, it's excellent distraction training for "Take" with dogs and having them learn "take" means in the middle, not at the ends where the hands are. Again: for beyond basic training, such as intermediate to advanced. As a chew toy, this product is great for any level.