Material: 100% Cellulose Acetate Biodegradable Acetate Size: 3.75 inch X2.75 inch This hair comb is nice and big with a nice design and these types of hair combs come in different types of colors. Also this Hair comb can be really smooth and not rough because it is nice and glossy. These same types of combs have a different design for each comb and different colors. Acetate is plant-based biodegradable plastic in the simplest form. Cellulose acetate is made out of processed wood pulp, and also often regarded as nontoxic, nonirritant, and biodegradable material. Acetate is far more flexible and durable compared to conventional plastic that are fossil fuel based.