This is a Zojirushi stainless steel mug. It's a lightweight and compact 360mL stainless steel mug with excellent heat and cold retention, and it opens with a one-touch mechanism. It's also fully washable. - Brand: Zojirushi - Model: SM-WA36-BA - Capacity: 360mL - Design: One-touch open - Features: Lightweight and compact - Heat/Cold Retention: Excellent heat and cold retention - Cleaning: Body is fully washable - Heat Retention: 86 degrees Celsius or higher (1 hour) 67 degrees Celsius or higher (6 hours) - Cold Retention: 9 degrees Celsius or lower (6 hours) I bought this but I'm not going to use it, so I'm putting it up for sale. There are no dents in the box. The instruction manual is also included. I'm selling it to someone who needs it. Please purchase with understanding. #Zojirushi #StainlessSteelMug #HeatRetention #ColdRetention