Using these sheet sets is a breeze. Just put the fitted sheet on your split king bed with the 50cm dimension, following the tags to ensure it's placed correctly. Then, add the flat sheet and pillowcases. For a great night's sleep, simply slide in and enjoy the comfort. When it comes to maintenance, you can easily toss these sheets in the washing machine. Use a gentle cycle with 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 or air - dry for the best results. This will help maintain the durability and softness of the sheets over time.