Each Bulk Bag measures 3' X 3' X 3' and provides you with approximately one cubic yard of material (325 square feet and 1 inch of depth). These bulk bags are water-resistant, meaning it will help protect your material against the elements! Road crush or gravel is a fine mixture of rocks and sand. Functions as a base or leveling material when it is made wet and compacted for a variety of different landscape structures and hardscapes such as decks, patios, retaining walls, and walkways. These Bulk Bags are brought to you by Manderley.