Pro Mound is a unique packing clay that bonds to form a solid surface base at the mound and batters box area. Allows pitchers and batters to "dig-in" and establish the footing they need without creating large holes. Quick and easy to install requiring only a shovel, rake, tamp and water. Packaged in convenient-to-use plastic bags which can be stored outside. Highly durable packing clay that remains firmly intact; long lasting and easy to manage.