Riedel makes a large variety of these stemless wine glasses or tumblers. This is again in their “O” line of Austrian glass. The ones shown are meant for tannic red wines like Cabernet or Merlot, and are taller than glasses, say, for Chardonnay.

It can take some getting used to having wine right out of these stemless glasses - you sort of just cup it in your hand. These dishwasher safe glasses are completely rounded except for the bottoms and stand about 5 inches tall.