QUINCE 100% Washable Silk Pajama Set Size M New Shorts-$118. Tank-$98. Material: 100% mulberry silk Weight: 19mm fabric weight for a premium drape and hand-feel Silk fiber contains 18 kinds of amino acids necessary for skin nourishment, hypo-allergenic, and naturally thermoregulating to help maintain body temperature Dyed without hazardous chemicals in a dyeing mill that meets bluesign® standards. Bluesign® helps factories operate more efficiently by reducing overall water, energy, and chemical use while putting safety measures in place to help protect workers from exposure to chemicals This material is certified by Standard 100 OEKO-TEX® (Certificate Number: SH050127759) which ensures that no hazardous substances are present.