High Impact Polystyrene, it is a tough, rigid plastic material with high impact strength which can be guillotined, punched, routered or sawn easily, and is readily available in a wide variety of colours. Used widely for toys, packaging, signs, kicking plates, display and point of sale. If you are looking for a particular coloured plastic with good impact properties then HIPS is a first choice material. Polystyrene is particularly suitable for thermoforming meaning various shapes and objects can be produced from this material.