Self-watering planter with water level indicator Removable planter liner High-quality plastic with natural stone look High-quality pure mineral plant substrate included For outdoor and indoor use Plant pot: Internal measurements shown without the self watering system. Please remember that this will occupy some space inside the unit reducing your overall planting space. Intelligent planter provides plants with water and fertilizer till 2-12 weeks dependent on planter size If you like a clear design you will love the CANTO Stone. The rough natural stone look in four different colors creates a wonderful contrast to lush greens and colorful flowers. The CANTO Stone cube and column planters have the same dimensions, so you can easily use the same planter liner in both models.