The 30oz tumbler with double wall vacuum insulation technology is made of 304 food grade stainless steel. Keep your coffee wine or cocktail ice-cold for 9 hours or your coffee and tea scalding-hot for over 3 hours.
Made of unbreakable 18/8 food grade stainless steel the tumbler is No BPA durable easy to clean, no odor and will not rust. The powder coated is also of great quality which is sweat-proof and non-fading.