Quality Material: Wonderful square outdoor planter made of quality concrete. A good choice for outdoor area because it manual-watering, UV and frost-resistant Special Design: This grey concrete planter has square form with textured effect. The material makes the planter very stable and strong Special Features: The surface of this grey planter from IDEALIST looks natural Please note: Dimensions displayed in the description are outer edge/lip measurements. (Outer edge to outer edge) This Planter has a top edge solid lip that has a thickness of up to 2-3 cm on each side. This will reduce the maximum inner planting space by a total of 4-6 cm. Please adhere to the planting instructions for the Idealist Lite and Premium ranges. They are attached under the product instruction tab below.