These Sferra Giotto pillow cases are super easy to use. Just slip them onto your pillows for a touch of luxury. When it's time to clean them, machine wash in warm water on a gentle cycle. Don't use bleach as it can weaken the fabric and make it turn yellow. Also, avoid using fabric softener. Wash dark colors separately to prevent color bleeding. Tumble dry on low heat and take them out while they're still a bit damp. To bring back their luster and sheen, iron them on the 'cotton' setting.