This large squishable mat is perfect for muscle strengthening during tummy time. Babies will Giggle at and love the six floating sea Pals that swim off as they try and grab at them with Little hands. Baby will learn cause and effect when they press on different areas of the mat and the sea Pals move around in different directions. Unique design & extra Large; no ordinary shapes here! This 18x27 inches nautical themed mat is shaped like a gigantic narwhal letting baby explore its squishy tail and other baby safe edges. Who doesn't love a Unicorn of the sea? Simply fill the outer edge with air and the inner mat with water (there is a water line to show how high to fill the mat). Easily deflates and drains and folds up tight for babies on the go!