Our MargTini tumbler combines the best of both worlds keeping your favorite cocktails ice-cold while on the go. The best solution for preventing dilution and ensuring your mixed drink stays as fresh as the moment it was poured.Our BevGuard™ technology guarantees your drinks stay ice-cold and refreshing, without the metallic aftertaste other stainless steel products often have. So sip back and relax, because drinks are better with BrüMate.