-Made of high-quality pine and coated with non-toxic BPA free varnish. -Triangular structure and good connections provide a solid foundation. -Certified by ASTM to ensure the safety of children. -The smooth and waterproof surface makes it easy to clean. -With a high bearing capacity of 135 lbs. -An excellent choice to develop kids' muscles and motor skills. -3 difficulty levels for children of different ages.