Constructed of stainless steel, our 40 oz Quencher H2.0 offers maximum hydration with fewer refills. 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 that resists splashes and holds the 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.