I had never heard of the Zojirushi brand but my daughter who’s been to Japan recognized it and we are now fighting on who gets to use this stainless mug everyday! It keeps drinks very hot and very cold  all day. I love that it is so light compared to my others. Also, it is leak proof!!! Genuinely a great portable container. It is supposed to stay stain and odor resistant so I’ll have to update if I see any changes. So far, so good!