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: our tumbler is made of 304 stainless steel, more durable than other ordinary plastic; and we add silicone base to keep it from sliding on slippery surfaces and reduce the noise. skinny tumblers with stainless steel straws and splash-proof lid.