What Our Gearhead(R) Experts Are Saying: "I use this daily-from road trips to desk duty-and it just works. The 30oz size keeps water cold for hours, the FlowState lid is clutch for straw or sip modes, and the narrow base actually fits my car holder. The handle's comfy, it survives the dishwasher, and the recycled stainless build feels bombproof."We reach for Stanley's The Quencher H2. O FlowState Tumbler - 30oz when staying hydrated needs to be effortless. Stanley's double-wall vacuum insulation keeps water crisp on gym days and road miles, while the three-position FlowState lid lets us choose straw, sip, or full-cover on the fly. With a cup-holder-friendly base and a grippy carry handle, it's the easy, everywhere tumbler we keep close from sunrise coffee to evening refills.