Zojirushi Stainless Steel Mug, 20 ounce, Black Matte

Slick Steel finish interior is corrosion resistant and repels stains
Stainless steel vacuum insulation keeps beverages hot or cold for hours
2-Step lid release process prevents excess condensation on the stopper from being flung off while the lid opens
Air vent on the mouth piece allows beverages to flow out smoothly, without gushing or overflowing
Safety lock to prevent the lid from opening accidentally