When I pulled the Aquadoodle wall runner out of the box I was disappointed…It was smaller than I thought it would be, but I thought what the heck we will give it a try. We cleared a space in the playroom and set it up on the wall. The kids loved it and played with it over and over again, drawing – watching the images disappearing and doing it all over again. Unfortunately, the pen does not hold that much water – so you are constantly refilling it or having your kid try to get into the sink to do it themselves (cringe). Also after repeated use the runner became warped and crinkly from the water use. It’s suppose to be an AQUAdoodle right ? Able to withstand water ? That’s what I thought too. It did not hold up well to repeated use, the normal mats are much better for this but also bulky. So for space and novelty it was fun while it lasted – but I will not be buying another.