Just like with most things, though, not all cotton plants are created equal. Egyptian cotton that grows along the Nile River produces the highest quality textiles because of its extra-long staples. 

 Silk sheets are known for their luxurious feel and smooth texture. Silk sheets are naturally hypoallergenic and can help regulate body temperature, making them a great choice for those with sensitive skin or allergies.  When choosing silk sheets, look for ones with a higher millimeter weight, which indicates the quality and durability of the silk.  Mummy weights of 19 or higher are considered ideal for silk sheets.