Featuring many styles, our Tervis tumblers are versatile enough to fit any lifestyle. Made of high grade polycarbonate resin with double wall construction they are virtually unbreakable and keep drinks colder or hotter up to three times longer than if in a typical glass. Microwave, boiling water, and dishwasher safe to ensure years of enjoyment. Virtually unbreakable which makes them really nice for pool parties, and outdoor gatherings. Choose your college logo - your grandchilds picture - anything your heart desires for the feature of the glassware. Many sizes and shapes available