So. You enjoy beer (or other beverages consumed in a pint glass). You also happen to be a geeky, nerdy, or just plain awesome.Then this set of pint glasses is perfect for you. They are made of lab quality, thick borosilicate glass. Now.. we wouldn't recommend dropping them on pavement from 3 feet in the air, but they definitely are heavy duty. And dishwasher safe (and autoclavable too.. If that's your thing). NOTE: Wash thoroughly before first use.