Tumblers

20oz tumbler with straw and splash-proof lid. Silicone base to keep it from sliding on slippery surfaces and reduces noise. Made of 304 stainless steel which is more durable than ordinary plastic tumblers. Double-wall vacuum insulated thermal design is great for keeping your drinks hot or cold for a longer time. 6 hours hot and 24 hours cold. Non-toxic and convenient. Dishwasher safe.