Using this mattress pad is super easy. Just stretch the knit skirt over your mattress, making sure it fits snugly up to 18 inches. When you want to clean it, simply put it in the washing machine as it's machine - washable. Be careful not to use harsh detergents that might damage the 3M treatment. For long - term use, air - dry it if possible to maintain its shape and moisture - wicking ability. Keep it away from sharp objects to avoid tears. This pad is great for casual use, so enjoy a comfortable and worry - free sleep every night.