Using these Casey Cotton flat sheets is easy. Just put them on your king - sized bed and enjoy a great night's sleep. When it comes to washing, use a gentle cycle with mild detergent. You can dry them on a low - heat setting. Avoid using bleach as it might damage the fabric. Also, don't iron them on a high temperature to keep the cotton in good shape. With proper care, these sheets will last you a long time and keep you comfortable night after night.