Personalized Tritan Sports Mug 16 oz (Set of 4) Our premium plastic drinkware, etched with the personalization of your choice, is impact and shatter resistant with glass-like brilliance. This set is great for indoor or outdoor entertaining; you will be amazed by the quality of this virtually unbreakable, glass-like drinkware. Made of 100% BPA-free Tritan???? copolyester, they are dishwasher safe, freezer safe and temperature resistant up to boiling point. Made in the USA.