Exceptional clear and durable plastic glasses ideal for use where safety and style are priority. Dishwasher safe up to 100 washes without showing signs of wear and tear. The material (Polystyrene) used is heat resistant up to 100℃ and will resist acids, alcohols, fats, oils and salt solutions. CE marked 175ml to line. Polystyrene Drinkware provides a great alternative to glassware. Drink related violence is an ever growing area of concern for Police Forces and licensing authorities across the country. We have focused on providing a safer option but without compromising on quality or style.