Using these Casey Cotton Bed Sheets is a piece of cake. First, simply put the fitted sheet on your super king bed with the 60cm depth, making sure to align it using the tags on each side. Then, place the flat sheet on top and tuck it in neatly. For a more luxurious feel, add the pillowcases. When it comes to washing, you can use a regular gentle cycle in your washing machine. Use mild detergent and avoid using bleach as it can damage the high - quality cotton fabric. After washing, tumble dry on a low setting or hang them to dry. To keep them looking and feeling great, iron them on a medium - low heat if needed. With proper care, these sheets will stay durable and comfortable for a long time.