36 piece 1ft x 1ft interlocking (A-Z,0-9) Wonder Mats in Red, Orange, Yellow, Green and Blue. Creates 36 square feet per set. Set up in seconds with easy do-it-yourself interlocking matsnWonder Matu0026#39;s unique soft surface pattern is designed for children with sensitive skin while its texture provides grip. Lasts up to 10 years under proper carenInstrument for development and learning. Letters and numbers can be popped out. Foam products are not for teethingnIts ~9/16u0026#34; of an inch thick exceeding the minimum protection requirement for children. Mats are waterproof and easy to clean with damp cloth and mild soapnMade in Taiwan from non-recycled, not-toxic, light weight, durable, lead-free and high density EVA. Passed CPSC standards, including tests and 53 substances of very high concern including toxicity reportnWonder Mats create a soft and safe environment for child development and playtime. As parents, we understand the importance of health and safety as first priority when it comes to our children. Our foam mats are made from non-recycled and non-toxic materials which provide vibrant, bold and consistent colors. They are extra thick and soft to help reduce impact and provide comfort as our children learn to walk, run and play. Lastly, the high density of our mats is designed so children cannot bit off or ingest pieces of the mats. Wonder Mat's quality matches the peace of mind our customers receive.