Heavy-duty rectangular pitcher's rubber that easily endures the pressure behind spiked shoes as pitchers follow through on their throws. Design and Details: Rotate between the rubber's four sides for years of use Hollow core allows the rubber to be fitted into the ground and holds it in place Technology: Rubber construction resists damage from UV rays, helping prevent breakdown from prolonged exposure to sunlight Additional Details: Adult: 6"x24" Youth: 4"x18"