Round plastic nursery pots are inexpensive & durable perfect for many types of soil or hydroponic growing media. The raised rim design allows easy handling & easy stack ability when not in use. Can be reused indefinitely. Please note that our pots are measured in trade gallon. A trade gallon is a term used to denote the sizes of standard plant containers in horticultural Industries. A trade gallon is equal to approximately 0.71 U.S. Liquid gallon.