Using these sheets is easy. First, place the fitted sheet on your queen - sized 40cm bed, using the tags to ensure it's the right way around. Then, slip your pillows into the pillowcases. For a great night's sleep, simply lie back and enjoy the cool, breathable cotton. When it comes to maintenance, these sheets are a dream. You can machine - wash them in cold or warm water with a gentle detergent. Avoid using bleach as it may damage the fabric. After washing, tumble - dry on low heat to keep the cotton soft. With proper care, these sheets will stay in great shape for a long time, giving you many nights of comfortable sleep.