This splash play mat is sixty eight inches in circumference and is an outdoor wading pool that is safe for small kids. It has a small amount of water in the bottom and several sprays that pop up and cover the mat. The pool pad is made of a durable PVC material that will give it a higher chance of not being punctured. It is not suitable for dogs or cats, or sharp implements! It is so easy to use the valve to put water in it. Just connect the valve and then connect it to a hose, VOILA! you have a splash and play mat that the kids can use safely! peace of mind, and summer fun!