Built to last through thousands of hits, the 8 pack of SKLZ(R) Impact Softballs help athletes refine their swing, experience instant feedback and locate that all-important sweet spot. These heavy-duty, whiffle-style practice softballs are constructed with the same EVA rubber material found in car bumpers and collapse on contact without cracking like some other practice balls. The SKLZ(R) Impact Ball also features a standard 11" circumference. FEATURES: Heavy-duty practice whiffle softballs Designed to refine an athlete's swing and find that all-important sweet spot Extremely durable and built to last thousands of hits Constructed with the same EVA rubber material found in car bumpers EVA Pop-Back technology collapses on contact without cracking like some traditional practice balls Gives hitters instant feedback upon impact Limited-flight design allows for easy retrieval Heavier than traditional practice balls for more feel Standard size softball with an 11" circumference Includes 8 practice balls per purchase Model: WFSFTBL-001