Dirt Locker is a patented erosion control product designed for growing plants and trees on sloped and inhospitable terrain. Dirt Locker installs easily helps retain soil conserve water reduce storm water runoff prevents mudslides due to wildfire burn and helps ensure healthy deep root structures for a beautiful aesthetic garden. Unusable land becomes usable once again! All of our Dirt Lockers are made in the USA and are constructed from 100 recycled High Density Polyethylene (HDPE) plastics.