High quality double wall stainless steel vacuum insulation construction allows the Stainless Mug to keep beverages hot or cold for hours. The tight-fitting flip-open lid with safety lock makes drinking from the mug easy, and prevents beverages from spilling. 2-step lid release process prevents excess condensation on the stopper from being flung off while the lid opens Tight-fitted flip-open lid keeps beverages hotter or colder Safety lock to prevent the lid from opening accidentally A special manufacturing technique was used to round the bottle opening, making it smooth and comfortable to the touch when cleaning 1-5/8" (4cm) wide mouth opening Easy-to-clean double layer nonstick coated interior enhances durability, and provides greater protection of the stainless steel against salt-containing beverages like sports drinks Made of BPA-free plastic and 18/8 stainless steel Optional low-profile screw-off lid provides an alternative sipping style to flip-open lid (sold separately)
