Using your Casey Cotton Fitted Sheet & Pillowcase Combo is easy. First, place the fitted sheet on your king single 40cm bed, making sure to align the tags for a perfect fit. Then, slip your pillows into the pillowcases. For a restful night, simply get in and enjoy the cool, breathable cotton. When it comes to washing, you can toss these sheets in the machine. Use a gentle cycle with mild detergent to keep the fabric in great shape. Avoid using bleach as it can damage the cotton. After washing, tumble dry on a low - heat setting or hang them to dry. With proper care, these sheets will maintain their softness and durability for a long time.