Using these fitted sheets is a breeze. Just lay the sheet on your queen - sized bed with 40cm depth and tuck it in around the edges. The tags on each side help you orient the sheet correctly. For maintenance, machine wash these sheets in cold water on a gentle cycle. Use a mild detergent to keep the fabric in top condition. Avoid using bleach as it can damage the cotton. After washing, tumble dry on low heat. These sheets are durable, but it's still a good idea to avoid over - drying. With proper care, they'll last you a long time and keep you comfortable night after night.