This is a peel and stick stainless steel backsplash we picked up at Home Depot. It comes in several configurations/sizes on 12x12 sheets.
You need to be cautious with it, however, as you need to use a spray bottle of water with a bit of dishsoap to wet the back of the tiles and give you some "maneuvering" time, otherwise these tiles stick instantly to the wall, with no room for error!
We learned that the hard way, as this install trick was not indicated in the instructions, so the first few sheets were less than perfectly aligned!
Hope that helps!