This is a Helios thermos. I used it indoors. I used it to drink hot water, but I'm selling it to declutter since I bought a smaller size. The exterior is plastic and the interior is glass. ■ Advantages of glass water bottles: odors and flavors are less likely to transfer, no metallic taste or change in taste, easy to wash and hygienic, high heat and cold retention, and environmentally friendly. ■ Disadvantages: vulnerable to impact and easily broken, and somewhat heavy. 【Product Overview】 ■ Product Name: helios Tabletop Thermos Elegance 750ml ■ Product Details: A simple and stylish German-made glass-lined tabletop thermos. The pale ice blue bottle blends in with the dining table or office, and it has good heat and cold retention. It comes with a cup and is convenient, making it a perfect gift. ■ Size/Weight: Approximately W105 x D115 x H294mm / Weight approximately 496g There are some stains and minor scratches from use, but there are no major scratches. I used it to keep hot water warm, so I didn't use the cup much. The label is also still clean. Please refrain from purchasing if you are sensitive to such things.