Premium Hand Crafted Beaker Mugs, Laboratory Quality Borosilicate Glass, 8.4oz (250mL) Capacity - Pack of 4 Mugs Description This is the perfect mug for a scientist, nerd, geek, teacher, parent, or gifted student... actually... pretty much everyone. When coffee or any other dark-colored drink is added, the graduations become even more visible. Whether you are enjoying a cup of espresso in the AM or some liquor on the rocks in the PM, you're going to be satisfied.(4) 250mL Capacity MugsThere are other beaker mugs. We tried them all. Some of them may even be. GASP, less expensive. But this is the one you want. It is lab quality (seriously) and will last.Note: Wash thoroughly before use Features: Hand crafted thick, lab quality borosilicate 3.3 glassware. Note: Lab borosilicate glass is typically lightweight and thin, so it feels different than standard household glassware. Graduations measure up to 200mL, total volume of mug is 250mL (graduations and capacity are both approximate) Great gift for scientists and geeks Best version on the market Set of 4 mugs Product Details: Brand: EISCO Special Feature: Lightweight Style: Modern Theme: Scientist,Scientists Pattern: Solid Is Discontinued By Manufacturer ‏ : ‎ No Product Dimensions ‏ : ‎ 10 x 4 x 4 inches; 1.6 Pounds Item model number ‏ : ‎ PHBKM250PK4 Date First Available ‏ : ‎ October 8, 2015 Manufacturer ‏ : ‎ EISCO Best Sellers Rank: #241,070 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #342 in Lab Beakers #342 in Lab Beakers Customer Reviews: 4.7 4.7 out of 5 stars 2 ratings