Click here to go to the website. Here’s an excerpt:
The Luka is a pause button for your shower for those who want to save water, shower pets indoors, shave legs, brush your teeth in the shower or elderly with limited mobility.
It is designed to suspend the flow of water without changing the temperature of your shower or reducing water pressure, because as we all know, it is either really hot or really cold! The Luka is as easy to use as a retractable pen, the Luka pauses your shower just a push of a button. There is no need to replace the showerhead that you already own because the Luka attaches right behind your existing unit. Simply install the Luka behind your showerhead and enjoy!
More conservation coverage here.