Official Stanley Tumbler Cup 30 oz Start fresh in the new year. In pastels that pop, the Quencher H2.0 FlowState Tumbler gives you all-day hydration with fewer refills. From office desk to workout studio, or nestled next to your yoga mat, double-wall vacuum insulation keeps water ice cold for 48 hours, and the slim base fits right in your cupholder. The advanced FlowState lid rotates through three positions: a straw opening to hold the reusable straw in place, a drink opening, and a full-cover top that resists splashes. Make hydration your feel good essential.