These frothing pitchers are 18/8 stainless steel, and have a hole at the top of the handle that you can use to hold a frothing thermometer (see inset photo). In addition, these frothing pitchers have measurement lines stamped in that are clearly visible both from the inside and outside of the pitcher showing the milk level in 6-ounce increments. The 20-ounce pitcher is 3.5" in diameter, and is 5.5" tall.