WHITE POLYSTYRENE or "STYRENE" PLASTIC SHEETS. .030" Thick (roughly 1/32") x 24" x 24" This translucent material will allow light to pass through. It is a great material for lamp shades, negative viewers, and commercial signs. Polystyrene is a thermoforming plastic that can easily be vacuformed or shaped by heating and bending. It is thin enough that it can be cut with scissors or a utility knife. This material is approximately the same thickness and rigidity of a credit card to give you an idea of the material you are working with Net weight is 11 oz. Shipping weight is 1 lb, 3 oz.