【LARGE PLAY MAT】47.2 x 47.2 inches when flat, 36 x 36 inches with sides up. Various design allows you to lay it flat for larger area or put borders up for a fenced area.Fence up playmat could greatly keep all the toys and balls from rolling and keep a baby who is rolling and scooting all over the place safe. 【SAFE KIDS MAT】BPA Free, Phthalate Free, Latex Free, Lead Free.Smibie Play Mat is made from soft, safe, durable foam. It's Non-Toxic and Meet the US and Europe regulated toy safety standards. 【THICK CRAWLING MAT】The thickness is 0.51 inch(1.4cm), strong flexibility.Great for Tummy time,perfect play ground.