YOUR DREAM TUMBLER: H2.0 FlowState tumbler. Double wall vacuum insulation means drinks stay cold, iced or hot for hours. 14oz, 20oz, 30oz, 40oz and 64oz options depending on your hydration needs. The narrow base on all sizes (except 64oz). ADVANCED LID CONSTRUCTION: Stanley has developed an advanced FlowState lid, featuring a rotating cover with three positions. EARTH-FRIENDLY DURABILITY: 90% recycled BPA free stainless steel DISHWASHER SAFE LIFETIME WARRANTY