Stanley 40oz Tumbler Exclusive Valentine’s Day Collection The Flowstate Quencher H2.0 Perfect gift for Valentines Day The 40oz Quencher H2.0 FlowState Tumbler keeps your drink ice cold for hours, thanks to double-wall vacuum insulation. The versatile FlowState 3-position lid has three sip settings: one for the reusable straw, one without and the option to rotate the silicone cover shut. It fits right in most car cupholders when you’re on the go.