473 ml. Take me with you. Leak-proof. Single-serve compatible. BPA-free. The average person uses about 132 disposable cups a year. This mug helps. Learn more at Aladdin-PMI.com/Sustain. 4 hours hot. 24 hours cold. Do not microwave. Top rack dishwasher safe. Designed in Seattle, USA. Ethically made in China.