Stanley The Quencher H2.0 Flowstate Tumbler, 30 oz, Azure

This Quencher H2.0 is generously sized (but not oversized) with an easy-carry, comfort-grip handle and a narrow base that will fit most cup holders. The double-wall vacuum insulation will keep your water cold for 9 hours and iced for 40 hours. And to cap things off, there's an advanced FlowState lid that features a rotating cover with three positions: a straw opening designed to resist splashes with a seal that holds the reusable straw in place, a drink opening, and a full-cover top.