Wall Street Pillow Case Poplin Light Blue Dots is designed by Magniberg. In the Wall Street collection there is this exclusive pillowcase made of supima cotton. The series is inspired by the bold shirts that were popular in banks during the 1980s. The pillowcase is woven with 300 thread count inspired by exclusive 60s shirt fabric. This soft and crisp fabric is mercerized for an ultra soft touch and OEKO-TEX certified which guarantees it is free from harmful chemicals. Supima cotton is a superior type of cotton grown in the United States. It makes up less than 1% of the cotton grown in the world. What makes it unique compared to other cottons is the extra long staple fiber. A longer fiber gives strength to the yarn and the ability to weave with a high thread count, allowing you to create a finer fabric with exquisite softness and incomparable strength.