You can filled the travel mug with the brim with ice and water, the water and ice remained cold and just seemed to grow colder for a full 24 hours. I did periodically drink from it and the water was icy. This tumbler would be great for a long road trip or on hot summer days by the pool.

Product Features

• Double Wall Vacuum Insulated for extreme temperature retention! Tapered at the bottom, it fits most cup holders.
• Made from kitchen grade Stainless Steel the travel mug is ready to roll with you anywhere you want.
• The double wall construction completely prevents any temperature transfer to exterior wall therefore eliminating any condensation or change in temperature where you hold your hand. Your cup will always remain a comfortable temperature for you to hold but your drink inside will be either ice cold or piping hot!
• Every drink tastes a whole lot better when the temperature is perfect; get the OuterEQ Cups Tumbler and see for yourself!
• Crafted with high-quality, food safe stainless steel, our unique travel tumbler features a double-walled, vacuum insulated design that keeps your cold drinks frigid and your hot cocoa bubbling; and all for long hours at a time.

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