Proprietary design provides more curve, speed, and distance Safe for backyard play Builds baseball skills Each ball weighs just under 1 oz 3 pack Blitzball takes backyard baseball to a whole new level. With its unique, patent-pending design, Blitzball gives players curving action, speed, and Home run distance. Learn to throw sliders, rising fastballs, knuckleballs, 2 seam fastballs, change-ups, and curveballs. Blitzballs are manufactured in the USA using only the highest quality plastic polymers. Each ball weighs just under 1-Ounce making it safe and fun for everyone. Nothing performs like a Blitzball