This children's picnic table has a square Southern Yellow Pine wooden top and seats with 1 5/8" O.D. legs. Square picnic tables are great for children as they encourage conversation. The 20" height of this table makes it easy for children to access the top. Southern Yellow Pine would look beautiful on a children's playground. The wood is treated with MCA, a copper-based clean, odorless, non-staining, and non-irritating pressure treatment that is safe for the environment and protects against termites and decay.