About Sky Bounce White Sponge Balls Sky Bounce® White Sponge Ball 2.5" Diameter. Major League Style Sponge Baseball for Recreational Play. Package Contents: (Pack of 12 Balls). Great for Youth and Newcomers to Practice Catching and Throwing.. Durable and Dense for that real Baseball Weight without the Hard Shell. About Sky Bounce Plastic Baseballs Sky Bounce® Plastic Baseball That Curves. Lightweight, Durable Design. Similar to Wiffle Balls in Weight and Size. Fun for All Ages (Can be used for Catch or Tee-Ball). Package Contents: 12 Plastic Baseballs. This Plastic Curve Ball was designed to take the place of baseball, stickball and softball for boys and girls in back yards and city streets. It is made of a tough rubbery plastic is light in weight and cannot be thrown or hit any great distance. This ball is also an excellent indoor ball. About Sky Bounce Ball Company Sky Bounce provides quality-consistent products for the street game enthusiast. Over the years, our product line has expanded from the popular Sky Bounce ball to include more items such as tennis balls and basketballs. Whether it's Stickball, Handball, Kickball, Fast pitch, and countless other sidewalk/playground games, Sky Bounce is the ball of choice.