Both evaluated and approved by building and construction crews, severe professional athletes, outdoor enthusiasts, military men/women, soccer mamas, and more, The IBEX Tumbler includes 2 layers of additional thick cooking area grade 18/8 Stainless Steel, and vacuum sealed to make sure maximum temperature level retention. We know you” ll love your IBEX Tumbler since we do too! We take excellent pride in our product and every purchase includes a 100% complete satisfaction assurance. There” s absolutely nothing more frustrating than a luke-warm beverage that ought to be hot or cold! This is one of our primary factors for producing the supreme beverage cooler, the IBEX Tumbler. The IBEX V2 Tumbler is engineered with double-wall insulation innovation to keep hot beverages hot and cold beverages cold for as much as 72 hours longer than any leading competitors! 2X