The short answer: Supima® is a premium Extra-long staple Pima cotton that is VERIFIED by the American Supima Association. Most Egyptian cotton is not grown in Egypt, it is grown in China and India. And there is also no verification system for Egyptian cotton (as there is with American Supima®.) So consumers really don’t know if they are getting a high-quality cotton or not. Check out more information HERE and an article in the Wall Street Journal HERE.