Vacuum Insulation The Tayst 20 oz. travel mug tumbler uses double-walled vacuum insulation... meaning the space between the stainless steel wall is void of matter. With no medium for heat to transfer, your drink’s temperature will not be impacted by the temperature outside the container. Hot stays hot longer and cold stays cold.
18/8 Stainless Steel Interior This tumbler rocks! It’s crafted from food-grade stainless steel, is BPA-free, FDA approved, and highly resistant to rust. The stainless steel is easy to wash by hand.
Sweat Free and Burn Free Exterior Hot liquids will not impact the tumbler’s exterior and there will never be condensation. The powder covered coating finish is durable and provides a fingerprint-free texture that is easy to clean.
First time I used it I actually put it down and came back a long while later to find my coffee still hot! I was surprised and happy Second time unfortunately the cover that covers the spout broke off. Can’t use it anymore ☹️