The Lagunitas mason jar is a stroke of genius. Be witness to an evolution of beer glassware by buying a set of these radical Lagunitas beer glasses now!

If the cool dog icon and the "Beer Speaks" quote on the bottom of this awesome mason jar aren't enough to make this a must-have, then check out the slightly puzzling markings down the side.

Consider these three markings on this Lagunitas Brewing beer glass at your next beer-drinking-discussion-group. If you’re like most people you'll probably get two out of the three:

• "420" - There may be some association to an attempted, and for the record unsuccessful, marijuana bust at the Brewery a few years ago.
• "10/6" - The most mysterious of the three markings is the 10/6 that represents the price of the Mad Hatter's hat; 10 shillings/6 pence. What this has to do with beer, we have no idea. Keep up the insane behavior though, Lagunitas; we love it!
• "3.14…" - Yep, for you non-math-wizzes ... 3.14 = Pi.

Still don't get the markings? Neither do we but don't dwell. Just pick up a set of these awesome Lagunitas mason jar beer glasses to increase the enjoyment of all of your favorite Lagunitas brews. And, yes, other beers taste great out of these original Lagunitas Brewing Co. beer glasses too! Give it a try, we did.