It’s the stainless steel flask that never lets you down—unless of course

The double-wall vacuum insulation will keep things cold for 8 hours and iced for 30 hours

and the journey home

one without and the option to rotate the silicone cover shut when you’re exploring the Land of Oz

Take this one on-the-go and help protect America’s treasures for the future—a portion of every sale supports the National Park Foundation’s restoration and preservation projects

The IceFlow™ Flip Straw Tumbler | 30 OZ Hot Drinks It’s the stainless steel flaskThese bold, colorful 30 oz flip straw tumblers are made to keep you hydrated in a fully functional style. Ideal for car commutes or workouts at home, it has a built in flip straw for easy and effortless sipping. Snap it shut and the double wall vacuum insulation will keep your drink extra cold for hours. It fits comfortably in your vehicles cup holder (treadmills and spin cycles, too!), and the folding handle lets you quickly grab and go. To help you