Brumate Resa 35Oz Leakproof Straw Tumbler The BrüMate ReHydration Resa 35oz Leakproof Straw Tumbler is where bold design meets everyday function. Crafted with triple-insulated BevGuard™ technology, this tumbler keeps your drinks cold for hours and features a 100% leakproof lid with an integrated straw for easy sipping on the go. With a slim, ergonomic body and cupholder-friendly base, it’s built for all-day hydration whether you're commuting, working out, or heading out for the weekend.