For starters it's a decent size; you may run into problems with its height (elbowing it off your desk or the like), but it's skinny enough to fit into smaller cup holders you may find in older cars. Simply put, it's like a typical 12oz. soda can, but just... ya know, taller.The temperature readout is neat, but largely unnecessary for my personal daily use. I don't know that there's a way to change the battery once it dies, and it seems a little finicky as far activating it when you want to. I see it light up fairly frequently when I give it a shake, or while I'm hauling it around. Minor cons aside, I do love that the readout is white leds, with a little blue water drop icon. And it's perfectly functional as a lid- it's watertight, so shaking energy or protein powder and such shouldn't pose a leaking issue. It is a screw top, though, so there might be beads of your beverage on the rim and a dribble trapped in the lid itself, so do be careful if you're worried about staining your shirt, rug, furniture or important paperwork on your desk. :PInsulation properties seem typical, although my personal experience is limited to plunking an ice cube or two before pouring in tea/juice. Maybe once it gets to winter, I'll try hot coffee, but I currently cannot weigh in on that.Overall, it's a good purchase, although cheaper options are likely out there. I was specifically looking for a white thermos to decorate with stickers/decals, so minor gripes notwithstanding, this is exactly what I was looking for. ^.^Within a matter of a week or two the screen has stopped working. I can no longer see the temperature of my drink. It does keep its warmth still but I no longer know ahead of time of its the right temp or not, its a surprise now.Este producto es malo no mantiene caliente ni helado los líquidos cualquier líquido sabe a metal es una verdadera decepción, el material se oxida muy rápidamente aun lavándolo con un buen jabón, “NO LO RECOMIENDO EN LO ABSOLUTO”The product is all I expectedHow to remove the plastic smell? I tried hot water, low concentration alcohol, and vinegar, but they didn't work.I like that it let me know the temperature of my hot drinks, I made hot tea one night and the next morning it was still very warm, it looks nice and is easy to handle, I plan on buying acouple more for gifts.No funciona el ledLooks great. Well made. I had to send it back I thought it was a coffee mug.