The WaterColor® White Tumbler Base is shiny, glossy, glass-like, buffed. Whatever you call it, the 12 ounce Tumbler Base is flawless. With a sturdy, rounded out base and tapered upper walls, this cylindrical design mimics the old fashioned rocks glass but is useful for hot drinks too. The sophistication of this 12 oz Tumbler will do right by whiskey, margaritas and wine, as well as tea and coffee. This is an often overlooked size but a legitimate insider favorite.