Ember Tumbler Review: A Perfectly Smart Coffee Cup
However, holding the Tumbler in my hand presented a different picture of the self-heating container. Unlike all of the companys other smooth drinkware products, this one has texture. The Tumbler was quite striking to hold and see in person. Its boring style turned out to also be quite clever. The exterior texture provides some grip instead of needing a handle. I had no problem holding the Tumbler without a handle and drinking from it....