Using your Casey Cotton Fitted Sheet and Pillowcase Combo is easy. First, put the fitted sheet on your double bed. The tags on each side will help you get the right orientation. Then, slide your pillows into the pillowcases. For the best results, wash these sheets in cold or warm water with a gentle detergent. Avoid using bleach as it can damage the fabric. Tumble dry on a low - heat setting to keep the cotton soft. You can iron them on a low - heat setting if needed. These sheets are durable, but try not to over - stretch them when making the bed to maintain their shape.