Sanforized is the only recognized trademark for Textile Shrinkage Control. Sanforized basically refers to sheets which have been pre-shrunk using a controlled shrinkage process that is purely mechanical (including steam and pressure treatment), without any addition of chemicals. The end result is a fabric that meets special test requirements and conforms to a precise standard of shrinkage established by the Sanforized Company. For further information refer to https://www.sanforized.biz/e_what.htm