Zojirushi Stainless Mug
The Stainless Mug features a lightweight design for added portability. The tight fitted flip-open lid with a safety lock makes drinking from the mug easy and prevents beverages from spilling.
- Stainless steel vacuum insulation keeps beverages hot or cold for hours
- 2-step lid release process prevents excess condensation on the stopper form being flung off while the lid opens
- A special manufacturing technique was used to make the body ultra-lightweight and compact
- 1-5/8” (4cm) wide mouth opening
- Made of BPA-free plastic and stainless steel
- 20 oz / 0.60 liter
- Matte black with EWO logo
Check out this link which shows testing of the Zojirushi vs. Yeti vs. Generic tumblers. These keep coffee drinkable for 11.5 hours vs. 2.9 hours for the Yeti and 1.2 hours for generic tumblers.