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Have you ever heard about Bummer or XYXX's modal underwears ?
Made exclusively from beech wood and processed in a closed loop system that recycles the chemicals being used. Modal is a result of Viscose going through a personal development workshop in order to become a better version of itself.
Exceptional softness, breathability, moisture management and a natural stretch with great recovery makes it great fit for undergarments. None of the disadvantages of viscose but its still flammable though.
