Era 40oz - Vibe CheckA new Era of straw tumbler is here. Our Era tumbler is totally leakproof, and made for stress free sips on the go. It has our fully leakproof Turn lid that works for both cold and carbonated beverages, ColdKey metal straw for minimizing the amount of plastic sitting in your water, SoftSip silicone straw so every sip feels like a luxury, BevGuard technology to keep drinks cold for 24+ hours, and a cup holder friendly base so you can enjoy 40oz of your