Using these fitted sheets is a piece of cake. Just put the sheet over your Super King bed with the 50cm depth, using the tags to make sure it's the right way around. For a great night's sleep, enjoy the coolness and breathability of the 100% cotton. When it's time to clean them, simply toss them in the washing machine. They're easy to wash and will keep their quality through many washes. As for maintenance, avoid using harsh detergents as they can damage the fabric. Also, don't dry them on a very high heat setting, as this might shrink the sheets. With proper care, these sheets will last you a long time and keep you comfortable every night.