Colour Black. The essence of timelessness. We make our Black colourway by mixing black ink with raw biodegradable cellulose acetate. Cellulose is the most common organic compound on planet earth. We use cotton and wood pulp due to their inherently high percentages of cellulose, and their small carbon footprint as compared to similar synthetic fibres. The result is a highly durable, hypoallergenic material, made from renewable resources. Monokel Jet Sunglasses