Children Play Mat - Numbers 0 to 9 Floor Mat for Kids (Educational, Safe, Durable and Washable EVA Foam Puzzle Mat) 10 Pieces: Easy-to-assemble 12x12 inch interlocking pieces. Non-Toxic EVA: Made of high quality EVA foam that is safe, non-toxic, and non-smelling. Covers 10 square feet: providing enough space for your kids to play safely and comfortably. CPSIA Standards: Meets or exceeds United States Consumer Product Safety Improvement Act for toys. Injury Protection: Standard 0.375 inch (10 mm) thickness prevents kids from hurting themselves.