Twelve feet by six feet of synthetic turf gives a batter the full width of a stance plus the stride room that a smaller mat cuts short during a swing. Printed home plate and batter box markings set a consistent reference for left and right handed hitters, so stance and stride length stay repeatable across sessions. The polypropylene surface stands 15 millimeters tall at a density of 79,800 roots per square meter, dense enough to take cleats and spikes without matting down or peeling at the seams. A 5 millimeter Eva backing grips the floor, preventing the slide that makes a hard swing unsafe and shielding a garage slab or gym floor from spike marks. The mat rolls up for storage against a wall and unrolls flat again without curling at the corners, at a total weight of 40 pounds. Fast pitch and slow pitch work both suit the surface, indoors in a cage or outdoors on a field.