The YETI shot glasses (four-pack) are also $50 (pictured below in Black) and come with a carrying case. They also come in the same colors as the flask, so you can mix and match.

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Like The Moose, most Canadian bars and restaurants have been using U.S.- ounce shot glasses, which contain 29.6 ml of liquid. The Canadian metric ounce holds the 28.4 ml required under liquor laws.