Professional instructors at Winning Pitchers Academy have been marking up our training lanes and mound turf for 12 years with large pieces of side walk chalk. Using this visual training process of instruction is essential to increase students skills and performance. Now Winning Pitchers Academy and Power Drive Performance brings you the best designed training mats ever made for professional training at home, high school, college or pro levels. They are 3'x10' PITCHING CHALK MAT, 3'x3" PITCHING CHALK MAT and 3'x6' HITTERS POWER DRIVE CHALK MAT. FEATURES of POWER DRIVE CHALK MATS: Black turf for visually presentation of training with chalk lines, marks, circles, X's and written goals. Includes 2 large pieces of sidewalk chalk. Thick 4" bright red line sewn into turf on all mats for important pitchers & hitters stride line. Step down rubber that simulates game mound drive foot position to increase pitchers power drive. Teaches proper toe down for softball and drive angle for baseball. All mats available in FOAM BACKING with skid pad for hard surfaces such as wood, cement or tile or FLEECE BACKING for indoor carpet or turf surfaces. 3'x3' Mini mat is longer at 3 ft. vs. standard 24"-27" mini mats. Extra foot adds more room for Power Drive and Toe Tunnel mounting, more Fastpitch toe drag area for visual measurement & increases mats anti skid contact floor surface. Hitters Power Drive mat has water jet cut insert hole to level HPD with front foot to face live pitching speeds. Turf plug included to use mat without HPD. POWER DRIVE "Owners Only" web based training site included with CHALK MAT. Site provides professional instruction and drills presented by Amanda Scarborough, Texas A&M two time All American, College Coaches, PPD Owner John Miller and Winning Pitchers professional instructors. Unique mat construction design by Winning Pitchers Academy allows a very realistic feel and performance for the absolute best mat in the industry. Heavy duty 100% USA construction. Extremely thick and dense turf mat. Spike proof 36 oz. turf weight per square yard. Weight is 109 oz. per square yard with height of turf height at 3/4 inch. Built to last for all ages, youth through professional. Best warranty of any training mat - 2 years.