Description The sustainable thread we use on our hats starts out as a substance called viscose and is processed by Enka, the producer of the finest viscose available anywhere. To manufacture viscose, Enka utilizes the wood of a specialized pine tree that is grown on a protected and controlled plantation. This results in a sustainable, renewable, and biodegradable resource. 8.25 oz (US), 13.77 oz (CA), (275-285 gsm)., 100% bio-washed chino twill Unstructured Sewn eyelets