Pure 100% linen fabric Imra Blue-Gray Denim 230gr/m2 (6.78oz/yd2). Denim woven from undyed flax and blue. Washed-softened, pre-shrunk
Alivaa Undyed Denim Loose Fit – Logan & Finley
Chitosan and nano-TiO2 coating improves the flame retardancy of dyed and undyed denim fabrics by increasing the charring - Nilgün Becenen, Sevil Erdoğan, 2022