High impact polystyrene sheet (hips sheet) is a versatile, cost effective material. hips single and multilayer sheet structures are engineered from the toughest polystyrene resins to add a superior balance of enhanced properties for color control, higher gloss, uv protection, appearance, stiffness, deep-draw formability, and high impact strength. We offer several sheet grades of high impact polystyrene, custom made for your market application: