FLEX-Drain helps you get the job done faster and easier, with professional grade durability and more versatility than traditional corrugated pipe. Flexible and expandable, FLEX-Drain easily bends around any obstacle, hold its shape during installation and with a simple snap, its integrated soil-tight fittings lock securely and stay connected during backfilling. The FLEX-Drain 4 in. x 8 ft. Perforated Pipe features polypropylene construction for excellent durability and flexibility. This pipe has spaced slits, so water drains in stages. Ideal for ground water drainage like French drains or dispersing water from flower beds. FLEX-Drain is a complete drainage solution system that's widely compatible with virtually all traditional 3 in. and 4 in. corrugated pipe and 4 in. PVC. Technologically superior, it's made with no-break copolymers and exceeds all applicable ASTM crush standards.