Borosilicate Erlenmeyer Flask Mug, 400ml
Perfect as the office coffee mug!
On one side of this novel Erlenmeyer flask mug are traditional Erlenmeyer graduations up to 400mL. Holds up to 500mL (16 oz). Made of heat-resistant borosilicate glass. Borosilicate glassware is very durable and is microwave / dishwasher safe.