Fiona Low Profile Fitted Sheets by Sferra. SFERRA LINENS may be renowned as the bedding of royalty, but they believe everyone should have a chance to sleep in luxury. That inspired Sferra to create Fiona—a sateen at its most accessible. With its silk-like hand, subtle sheen, and quiet palette, it’s an understated form of elegance. Country of Origin:ItalyFiber:100% Long-staple CottonFabrication:Sateen Care Instructions: Machine wash warm water on gentle cycle. Do not use bleach (bleaching may weaken fabric & cause yellowing). Do not use fabric softener. Wash dark colors separately. Tumble dry on low heat. Remove while still damp. Iron on “cotton” setting to regain luster and sheen.