Tumbler Glass with Perfect Pour lines. Portion control with a Twist! Our glasses are: * Designed, manufactured and obsessed over in the USA * High Quality 10oz. glass, with perfect pour line at 2oz. and 15oz. * All inks are durable and dishwater safe—BUT for best results, a light hand-washing helps protect stems and preserve the color print * Fun graphic lines are matte finished in Black & White The lower 2oz. line on the glass is our Perfect Pour line that keeps you in check. The 5oz. line keeps you mindful of your alcohol intake.