Set of 8 inch diameter balls, constructed with a medium bounce, medium density foam (40kg/M3), one in each of our spectrum colors. Best suited for middle and high school Aged kids or where a heavier ball is required for throwing. Certified latex free. Non-sting coating is a proprietary polyurethane. the tactile, non-sting coating makes them easy to grip, and the coating is so durable, they're virtually tear-proof! no more red marks from the stinging hit of a vinyl- coated or rubber ball, so everyone can play at ease and gain confidence. That means more fun during more activities. Our premium Gator skin balls are simply your best choice. Gator skin is a registered trademark of S&S Worldwide. Any use of this trademark without express written Consent from S&S Worldwide is strictly prohibited. Gator skin is the original coated foam ball enjoyed by millions of satisfied customers.