The RTS Home Accents Rock Lock Raised Garden Bed is an interlocking border system that looks and feels like natural stone. Achieve beautiful authentic looking walls in just minutes with endless layout possibilities. The easy-to-assemble modules will give you a look and feel of real rock walls while each section only weighs 9 lbs. The border system is suitable all year round and will not crack, chip or fade in any weather. Rock Lock will also extend your growing season as the hollow walls insulate the soil and plants. Ideal for vegetable gardens, flower gardens, water gardens, retaining walls, sandboxes and playgrounds.