FEILEX FXAF-153 3 litter Vacuum Flask / Thermos

Key Characteristics of Glass-lined / Glass Vacuum Flasks:

• Pure Taste: Unlike some metals, high-quality food-safe glass does not retain flavors or odors from previous drinks (like coffee, tea, or milk), ensuring a pure taste every time.
  

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  Insulation: Many glass flasks feature a double-wall structure
  
  (or a traditional vacuum-sealed glass inner liner inside an outer plastic/metal shell) to trap heat and keep liquids hot or cold for hours.
  

  
  

• Care & Handling: Because they use glass components, they require a bit more care than solid stainless steel to avoid cracking from hard drops or sudden, extreme temperature shifts (thermal shock)