Made from 100% recycled high density polyethylene, each Dirt Locker® purchased saves the equivalent of 13 plastic milk jugs from entering our oceans and landfills! Small, medium and large Dirt Lockers come in two colors: Original Black or Natural Brown. Created with a UV inhibitor to prevent sun damage with the added protection of shade from your plantings, Dirt Lockers can withstand temps of -58°F to 160°F. Prevent erosion and stabilize your hillside by interlocking individual Dirt Lockers to create a terraced network of raised planter bed rows that descend down your sloped yard while retaining soil and moisture!