Using these Casey Cotton Fitted Sheets is a piece of cake. Just lay the sheet over your king single bed (50cm) and use the tags on each side to make sure it's correctly positioned. For a good night's sleep, smooth out any wrinkles before getting in. When it comes to washing, you can use a regular gentle cycle in your washing machine with mild detergent. Avoid using bleach as it may damage the fabric. To keep the sheets in top shape, tumble dry on a low - heat setting or hang them to dry. Don't iron on high heat; a medium - low setting is best. With proper care, these sheets will stay comfortable and durable for a long time.