Using these Casey cotton sheet sets is a piece of cake. Just put the fitted sheet on your double bed of 50cm, using the tags to make sure it's in the right position. Then add the flat sheet and pillowcases. When it comes to washing, use a gentle cycle with mild detergent. This will help keep the fabric in good condition. Avoid using bleach as it can damage the cotton. You can tumble dry on a low setting, and the sheets will come out soft and fresh. With proper care, these sheets will last you a long time and keep providing you with a comfortable sleep experience.