ULTRA DURABLE - These Crusher training balls can take the about of multiple seasons. Designed with highly durable plastic components the flexible plastic surface compresses on impact when hit then pops back into shape immediately.LIMITED FLIGHT - No more chasing balls around the field. Perfect for small sized training spaces or indoor hitting practice. The built in holes minimize flight, these balls were designed to act true to flight path but minimize distance covered when hit.INSTANT FEEDBACK - The size of a standard sized baseball shows true batting launch angle and flight direction. Immediately shows if a ball is hit squarely or mishit off the bat barrel.GREAT FOR ANY COACH - Every coach needs a set of these in his or her training arsenal. Makes the perfect complement to any hitting drill baseball training equipment. Crushers are great for keeping coaches safe, the flexible shell flexes on impact reducing the need for batting screens during batting practice