3.25x3.25in. Perfect for succulents, cacti, or other small houseplants. Concrete is a versatile material adding a touch of modern flair to any decor. Seller indicates that each planter is made out of recycled concrete dust from constructions sites. They are hand poured, sanded, and painted in small batches making them the most sustainable pots we can find on the market. These pots are meant for the indoors and will not do well in freezing temperatures. Please keep in mind, they do not have drainage holes, as concrete can naturally absorb excess water.