The requirements for this product are fairly self-explanatory and simple. I have no complaints, other than the fact that it was put on 1/2 price sale shortly after I purchased it. I have (just now) reached out to customer service to ask about a partial refund, but have not yet received an answer either way.

Do follow the warning affixed to the product when unpacking. The rolled mat is under considerable tension, and springs open when the plastic wrap around the rolled product is cut.