Iconic Sidney Sunrise sunglasses 🕶️ with black square Bio-acetate frames and Kimoa logo in slight low relief on the orange temples. Polarized mirrored lenses in shades ranging from orange to yellow. Bio Acetate is a biodegradable material. Cellulose is a natural polymer that forms the backbone of the entire plant kingdom. The traditional plasticizer has been replaced by a plant-based plasticizer, which makes a bioplastic with considerable bio-based content.