The FLEX-Drain Pro is a patent-pending, innovative 4 in. x 100 ft. perforated single wall drain pipe with alternating sections of flexible and standard corrugated sections. The product provides the same lightweight, durable, and low-cost drainage solution as its competitors in a more compact and versatile package. The flexible sections of the product allow for it to be packaged in a more compact footprint for improved storage/transportation, reduced memory when un-folding, and a built-in elbow every 4 ft. if needed. The drain pipe is made of high-grade, durable polyethylene and its 100-foot length allows it to efficiently draw water away from wet areas. The pipe exceeds all ASTM standards and is compatible with all standard 4 in. corrugated pipe, fittings, and Flex-Drain products. Color: Black. Material: HDPE (High Density Polyethylene).