Commuting, studio workouts, day trips or your front porch—you’ll want this tumbler by your side. Thanks to Stanley’s vacuum insulation, your water will stay ice-cold, hour after hour. The advanced FlowState lid features a rotating cover with three positions: a straw opening designed to resist splashes while holding the reusable straw in place, a drink opening, and a full-cover top. The ergonomic handle includes comfort-grip inserts for easy carrying, and the narrow base fits just about any car cup holder.