Lichen Duster Pattern by Sew Liberated Level: Intermediate. Sizes 0-30. The versatile Lichen Duster can be worn as a lightweight coat, wrap dress, or robe. It is unlined, constructed with front and back facings of the same fabric. We recommend mid-weight linen or yarn-dyed cotton for all-season wear. More advanced sewists can branch out and choose mid-weight wool or even silk or silk velvet. SLN135