OuterEQ Insulated Tumblers Travel Mug Stainless Steel Tumbler 30 OZ 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.