Using these Casey Cotton Fitted Sheets is a breeze. Just place the sheet on your 50cm single bed, align it properly with the help of the tags on each side, and tuck it under the mattress. For the best results, wash them in cold or warm water on a gentle cycle. You can use a mild detergent to keep the fabric in top condition. Avoid using bleach as it may damage the cotton. After washing, tumble dry on low heat. This will help maintain the softness and durability of the sheets. With proper care, these sheets will provide you with many nights of comfortable sleep.