"Installed the flooring about a year ago over thick carpet for a basement gym. Very pleased with it's performance. Gets regular use for a variety of activities. Stays fastened, supportive but not hard, good traction, easy clean up if needed but otherwise no maintenance. Worth the money - very happy with this buying decision!" - William https://www.greatmats.com/gym-flooring/gym-floor-tile-staylock-black.php