Unleash the full potential of your vintage Thermos with this replacement filler! A genuine Thermos Stronglas 24f filler is specifically designed for narrow neck vacuum bottles, promising a seamless fit and restoring your flask to its former glory. Imagine pouring your favorite hot beverage into your trusty Thermos, knowing it will stay warm for hours, just like it did when it was new. Every Thermos brand filler is in-use tested with hot water and thermometer test. This ensures optimum performance and years of reliable use, perfect for camping trips, picnics, or simply enjoying a comforting drink on a cold day. NEW OLD STOCK VINTAGE 1980 SOLD AS IS Type: Vacuum Flask Material: Glass Thermos Brand Vintage, Classic, Durable, Reliable, Stronglas