The CHAMPRO Step-Down Pitching Rubber’s heavy-duty rubber construction endures the pressure of spiked shoes and resists damage from prolonged exposure to UV rays. Built with a traditional wood bottom for longevity. Its two-level molded construction prevents uneven holes in front of the rubber. Bury the rubber for long-term or permanent installation. Available in Official Size (6�x24�) and Youth Size (4�x18�).