Using your Casey Cotton Sheet Set is a breeze. Just put the fitted sheet on your double bed with the 50cm depth, using the tags to make sure it's in the right place. Then add the flat sheet and pillowcases. For washing, use a gentle cycle with mild detergent. This will help keep the high - quality fabric in great shape. Avoid using bleach as it can damage the cotton. You can tumble dry on a low setting. These sheets are very durable, but it's still a good idea to check the seams from time to time for any signs of wear. With proper care, your Casey Cotton Sheet Set will last you a long time and keep providing you with a comfortable sleep.