Stainless tumbler Personalized Gift| Insulated Cup Tumbler | Gifts | Friends Gift Tumblers | For Mom | Straight Tumbler 20 oz. | Wedding Gifts Personalized Cup *20 0z. Advanced insulation technology: Double-Wall Vacuum insulated thermal design is good for keeping your drinks warm or cold for a longer time, so you can use it in any season and also our tumbler comes with a push-on Tritan lid keep any dust particles getting in and stop major spills. Safe and Durable: tumbler is made of 304 stainless, more durable than other ordinary plastic; and with silicone base to keep it from sliding on slippery surfaces and reduce the noise. This tumbler will make a great gift to your friends and yourself.