Using these French linen vintage - washed sheets is a breeze. Just put them on your mattress as you would with any regular sheets. The Universal Fit™ design of the fitted sheet means it will easily fit mattresses between 6 and 22 inches thick. For a cozier feel, you can pair them with your favorite blankets. When it comes to maintenance, machine wash them in cold water on a gentle cycle. Use a mild detergent to keep the linen's softness and quality intact. Avoid using bleach as it can damage the fibers. After washing, tumble dry on low heat. You can also air - dry them for a more natural look. Iron the sheets while they're still slightly damp for a crisp finish. These sheets will get softer with each wash, so enjoy the long - lasting comfort they provide.