The inside of my glass thermos has a spot that is not shiny. Is it safe to use? - Quora
Orange Thermos vacuum flask from 1960's. Keep drinks hot or cold in this glass vacuum flask with red/orange plastic casing. With screw on cup Stock Photo - Alamy
Thermos Jupiter 38 Transluscent Glass Lined Flask 500ml for sale online | eBay
Glass Thermos Carafe | Carafe, Kitchen tools and gadgets, Canteen
Double Wall Vacuum Glass Thermos: China Suppliers - 699323
Bamboo Lid Double Wall Thermos Glass Tea Bottle with Stainless Steel Long Infuser - China Glass Tea Cups with Replaceable Lid and Drinking Mug with Natural Bamboo Lid price | Made-in-China.com