Starmark's Everlasting Treat Sprocket is a puzzle challenge that's made dog tough to hold up to even the toughest canine chewers, while still being soft and safe in the mouth. Insert one Everlasting Treat into one of the two different difficulty levelschoose the upper level for beginners or the lower level for more experienced chewers. The bottom cavity can also be filled with small treats, dog food, or any other treat your dog enjoys. It's also freezable for a cool summertime treat or to increase the chewing challenge. Toy floats in water. Dishwasher safe for convenient and easy clean up. The Everlasting Sprocket is made in USA and comes packaged with one USA-made Everlasting Treat in chicken flavor.