BioD-Block™ is a coir fiber block system consisting of a densely-packed, 10 ft long, elongated mattress coir fiber block attached to a woven coir fabric. Coir fabric is tightly wrapped around the10-ft long coir block and connected to the block on three sides leaving the other side open to fill with dirt. Each block has a male and female end. There male and female ends in BioD-Block™ coir block system create a strong and easy- to-handle connection, providing an excellent face to soil layers.