XL B/W Foam Play Mat Set - ~4.6 ft Square, Ocean LifeXL B W Foam Play Mat Set ~4. 6 ft Square, Ocean Life Lightweight EVA Foam pieces (same material used in Yoga mats). High contrast black and white is great for developing eyesight. Soft place for tummy time, new crawler, or cushioned play area. Build a towel, a cube, or a play area and fill with balls or toys. Keep little one's play area contained or use this as a learning mat with ocean life puzzle pieces. Learn to identify animals and shapes. A