2.5 L .5'' W STYLE. Alligator Style HOLD. Strong Grip * Set of 3 clips Cellulose Acetate Material ~ Much stronger and more durable than an acrylic material. This material costs more than acrylic material to produce. Cellulose acetate is less brittle and wont break as easily. It is also a renewable resource ~ essentially made from a wood pulp. It is the same material used for high-end eyewear frames.