Both tested and approved by construction teams, extreme professional athletes, outdoor enthusiasts, military men/women, soccer mommies, and more, The IBEX Tumbler features 2 layers of additional thick cooking area grade 18/8 Stainless-steel, and vacuum sealed to guarantee maximum temperature level retention. We know you” ll love your IBEX Tumbler due to the fact that we do too! We take fantastic pride in our product and every purchase features a 100% satisfaction assurance. There” s absolutely nothing more disappointing than a luke-warm drink that should be hot or cold! This is among our main reasons for developing the supreme beverage cooler, the IBEX Tumbler. The IBEX V2 Tumbler is crafted with double-wall insulation innovation to keep hot beverages cold and hot beverages cold for up to 72 hours longer than any leading competitors! 2X