These mats are the perfect match for our new sun room and patio floors, which are concrete (stone finish, pewter glaze). The original order I placed for these matts were lost in transit for delivery; however, Joss and Main's Customer Service agents quickly replaced the "lost" mats. Even though one size was not available, I am very happy with having two of the same size, as they look great and are easy to maintain. I am giving the review for these mats 5 stars due to how pleased I am with the product and even more impressed by Customer Service's efficient and friendly approach to resolving the issues I had with fulfilling my order and receiving the replacement mat shipment.