The Easy Glider and Easy Glider Max are easy to throw straight and level, even if you are inexperienced. The unique patented aerodynamic design allows for them to glide through the air without taking sharp arcs or turns, as well as more slowly, giving your dog a better chance to follow and catch. Plus both are made of a highly durable patented soft foam that will hold up to being in your dog's mouth without hurting him. They also float in water for disc catching fun at the pool, lake, or beach. Not intended as a chew toy. Completely free of latex, vinyl, and phthalates.