HIPS (high impact polystyrene) High Impact Polystyrene (HIPS) is a low cost, tough plastic material that is easy to thermoform and fabricate. It is often used for: Point-of-purchase displays Printed advertising graphics Thermoformed parts Shelves Kiosks Fixtures Models and prototypes Thermoformed machine housings Retail display applications Countertop point-of-purchase displays Banners Standard Sizes Sheet 48" x 96" (.03" -0.25" thick) *Custom sizes are available upon request