YOUR Aspiration TUMBLER: Whichever way your day flows, the H2.0 FlowState tumbler retains you refreshed with much less refills. Double wall vacuum insulation usually means beverages stay chilly, iced or warm for hrs. Choose between our 14oz, 20oz, 30oz,40oz and 64oz choices based on your hydration wants. The slender base on all sizes (besides 64oz)