Using this mattress topper is easy. Just place it on top of your super king - sized mattress, and make sure the deep - walled edges fit snugly around the mattress. For daily use, enjoy the extra comfort it brings to your sleep. When it comes to maintenance, you can machine - wash it regularly to keep it clean. However, follow the washing instructions on the label to avoid damaging the microfibre filling. Also, avoid using harsh detergents as they might affect the softness of the cotton cover. If you notice any signs of wear and tear, it's a good idea to replace it to keep enjoying a comfortable sleep environment.