Some observant and now angry fans of the Idaho Steelheads are taking legal action against Boiseโ€™s CenturyLink Arena after learning that the arenaโ€™s large beers are the same size as the small ones.

The lawsuit comes after a viral video showed both sizes containing almost the same amount of beer. The large cups, which the minor-league-hockey arena was selling for $7, were taller but significantly thinner than the small ones, which went for $4, but each held nearly same amount.

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Eric Trapp, president of the Steelheads, an ECHL team, released a statement saying that the team and the arena will correct the problem. While the sizes are technically different โ€” large cups are 20 ounces, small 16 โ€” โ€œthe differentiation in the size of the two cups is too smallโ€ for what the arena charged, he agreed. From now on, large beers will be 24 ounces.

โ€œShame on us. We should have been more attentive,โ€ Trapp said.

Four fans are now seeking $10,000 in damages for what they claim amounts to the money they have been cheated out of over years of attending events at the arena.