Flex-Drain 4"x25' Black Solid Flex Drain, a flexible expandable drain pipe suitable for various drainage applications. It effortlessly expands from 6' to 25' and features built-in soil-tight fittings, eliminating the need for additional connectors. Once bent, the pipe retains its shape, making installation a breeze. Simply dig the trench, lay the Flex Drain pipe, and cover it up. This durable pipe meets the Corrugated Polyethylene Pipe Association's Test for Crush Resistance, ensuring longevity and reliability.