20oz Double Wall Stainless Steel Super Tumblers

We have been using the production samples of these tumblers around the office and all we can say is "WOW!" One of the employees took one to a swim meet with outside temperatures approaching 100 degrees and the ice lasted longer than anyone would have ever imagined. Even in that kind of heat, you can realistically expect to hold ice for around 24 hours. Hot drinks stay hot for 5-6 hours. Fits in most cupholders. Sweat-free design. Made from high quality 304 stainless steel.