~ Acrylic Plastic Drinkware & Tableware Care ~Acrylic plastic is break-resistant and some styles are labeled "top rack dishwasher safe", but *NOTE*: all acrylic glasses eventually will crack or craze if washed in the dishwasher. Hand washing will ensure that your Rainbow acrylic glasses retain their color, clarity and beauty. See our Plastic Tableware and Drinkware Shopping Guidefor more information about the different types of plastics used to make durable tableware.