Personalize in style with our outdoor-friendly, virtually unbreakable Tritan Drinkware. This set of 4 simple yet stylish 12 oz Double Old Fashioned (Rocks Glasses) is a great choice for everyday drinkware. Our unbreakable drinkware is dishwasher and freezer safe and temperature resistant up to boiling point, made in USA, and BPA FREE! This space-saving drinkware stacks without sticking and inhibits water pooling on the bottom. Each is 4" tall. Our Tritan products are personalized to your desire. Make a statement or create a personal gift for someone you care about. At Carved Solutions each product is hand addressed, etched with care and great attention to detail. Supporting our US Made business model, developed in the US and made exclusively from Tritan, offers you our discerning clients a new generation of BPA-free copolyester. This unique collection of luxurious beverageware is virtually unbreakable, with unparalleled dishwasher durability. By utilizing the latest advances in material science and using the strictest manufacturing standards, we are now able to offer beverageware that has been greatly improved in every aspect compared with the drinkware of yesterday. Best of all, the entire line is made in the USA, from concept to creation. durable. clear. safe... and now PERSONALIZED by Carved Solutions! Tritan is similar to polycarbonate (Lexan) in durability however is BPA FREE. Tritan Care: Hand wash using soft sponge/cloth and gentle detergent. Do not use abrasive/scrub sponges or brushes. Dishwasher safe, top rack only. Low, normal or regular dishwasher cycles only! Do not use higher temperature settings (over 140 degrees F) such as ?heavy duty?, ?sanitize?, or ?pots & pans? as higher temperatures may damage beverageware. Turn off any ?heat dry? or ?heated dry? settings; these high temperature settings may damage beverageware. "Energy Star", Bosch, Meile, Thermador & Viking dishwashers may have hot water temperatures greater than 140 degrees. Many higher-end dishwashers also offer a "steam clean" cycle. If you own any of these machines, your Tritan products must be hand washed No plastics can survive the high temperatures that these dishwasher use; we cannot be responsible for any damage caused by putting Tritan items in dishwashers. Although Tritan is heat resistant, it is not recommended for use in the microwave. Failure to follow these guidelines may void any manufacturer?s warranty. Do not use nail polish remover or turpentine, as these will damage the plastic. Dry with a soft, nonabrasive lint free cloth.