The “Fit & Stick” cover is made from a space-age fabric that reflects the heat of your iron BACK to your fabric. Reflects 300% more heat than a regular cotton cover. Effectively ironing both sides at once. Not only that, “Fit & Stick” actually sticks to your ironing board so it doesn’t move around when you’re ironing. Made to fit The Big Board, 63in x 27in. Easy to keep clean, resistant to fusibles, starches and interfacings.