click here http://www.amazon.com/gp/product/B000TEZCEQ/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B000TEZCEQ&linkCode=as2&tag=bestbuygame04-20
This thing is amazing! Really feels like a LOT more water than it actually is. You can even test how it feels without the special feature by reaching up and blocking the center hole, WOW what a difference their technology makes!