The product is a pack of 7 brand new Jugs Sports Sting-Free Yellow Dimpled 12 inch softballs for use with pitching machines. Jugs has proven to be the industry leader with pitching machine balls that consistently are more accurate, fly true, and don’t sting on contact. Jugs practice balls are good to use with any bat and are durable. • Available in Game-Ball Yellow 12 inch. • Specifically designed for use with pitching machines. • Dimpled for maximum accuracy and performance. • Will not dent aluminum bats. • Feels like a leather ball when hit. • Will not sting your hitters' hands. • Same size and weight as leather softballs.