I bought 3. The MOST FANTASTIC KEEPING DRINKS HOT AND COLD. Infinitely better than very expensive ones I’ve bought and never kept hot for more than a short time. including LL Bean.These REALLY WORK. I fill one with hot tea before bed and it is still hot when I wake up. Likewise, one,with juice still cold in morning. And, I LOVE LOVE the COLORS , and the narrower shape is great . GREAT PRICE. I will be back for another one or two. I like using a different color , one each for coffee, tea, juice, water, so it is easy to identify.