T Christy Drain Sleeve 0.5 oz. Sock 6 in. x 100 ft.

Just apply Drain-Sleeve over perforated pipe like you pull on your socks. Its knitted construction is a seamless fabric that stretches for easy installation without tearing and provides a snug fit. Drain-Sleeve eliminates the need for gravel backfill, delivering significant savings in installation time, material and labor.