Using these Casey Cotton Bed Sheets is a breeze. First, take the fitted sheet and use the convenient tags to identify the correct sides, then place it over your mattress. Make sure it fits snugly around the corners. Next, put the pillowcases on your pillows. For the best results, wash the sheets before first use. When it comes to washing, use a gentle cycle with mild detergent in warm water. Avoid using bleach as it can damage the fabric. You can tumble dry on a low setting or air - dry for a more natural feel. If the sheets wrinkle, you can iron them on a medium - heat setting. These sheets are built to last, but to maintain their quality, don't overload the washing machine and try not to wash them with items that have zippers or rough surfaces that could snag the fabric.