Aquadrain 15XP drainage composite is a three part prefabricated sheet drain consisting of a 3-dimensional polypropylene formed dimple core covered with a non-woven polypropylene filter fabric bonded to one-side and a polymeric film bonded to the other. The filter fabric allows water or other liquids to pass into the drainage core while restricting the passage of soil particles. The formed dimple core provides compressive strength and collects water for flow to drainage discharge pipes. The filter fabric is bonded to each dimple to minimize fabric intrusion into the core resulting from backfill pressure. The polypropylene core resists chemical attack and degradation in soil. The polymeric film backing makes it ideal for use with soft waterproofing materials.