We love the Midtown so much that we made it in 3 sizes"“one for toddlers, one for fourth-graders to high schoolers, and one for high-schoolers and adults alike. Each ergonomically designed chair is made from sturdy furniture-grade polyurethane foam that provides the perfect combination of comfort and support. Foam is approved under the CertiPUR-US program, which assures that the foam is made without ozone depleters, flame retardants, heavy metals, or formaldehydes. Certification also guarantees low emissions for improved indoor air quality. The chair''s removable vinyl covers are extremely durable, wipe clean easily, and feature a tough acrylic bottom to withstand abrasive surfaces. Product dimensions: Small - 29"L x 20"W x 21"H, Medium - 35.5"L x 24"W x 25"H, Large - 43"L x 24"W x 30"H. NFPA 260 Class 1 Certified, 400,000 double rubs.