Don’t Judge by the Look: Why a Vacuum Flask Should Use a Glass Liner

Since the 1940s in Hong Kong, Camel has focused on vacuum flasks. The key to taste isn’t the exterior—it’s the liner material. Below is the clearest way to explain why a glass liner deserves first priority, and how it compares with a standard stainless-steel liner.

Three decisive advantages of a glass liner


1) Cleaner taste with less carry-over
Glass is stable and close to neutral, so it’s less likely to absorb odors or oils. Switching between drinks is more reassuring—especially for herbal brews / coffee / tea where “true flavor” matters.

2)  Easier to clean, steadier flavor
Warm water plus a mild cleaner is enough. After proper cleaning, the interior returns closer to a neutral starting state, so long-term use is less likely to leave mixed odors.

3) Kinder to acidity and aroma
 Tea polyphenols, coffee oils and herbal notes can strongly affect taste. A glass liner preserves these details better and is less likely to “rewrite” the flavor.

In short: Want pure flavor? Choose a glass-lined vacuum flask first.

How does it compare with a standard stainless-steel liner?

  • Residual odor: Glass keeps a cleaner profile; stainless steel is relatively more prone to lingering notes and needs more meticulous cleaning.

  • Carry-over risk: Lower with glass; higher with stainless steel.

  • Herbal/coffee/tea: Glass is more flavor-friendly and preserves aroma layers better.

  • Impact & portability: Stainless steel is tougher and lighter for frequent movement; glass should avoid strong impacts and thermal shock.

Conclusion: If your top priority is clean taste, no carry-over, and suitability for herbal/coffee/tea, a glass liner is the safer choice.

What if you need to carry it every day?

When you must balance portability and a more neutral taste, consider Camel’s:

  • Flow 53 / Polar 100 — stainless-steel liner with a ceramic coating that helps reduce residual odors; suitable for most drinks.

  •  Camel Mini 20 – a simple, commuter-friendly daily carry.  ( This section is only a carry-use supplement; it does not refer to standard stainless-steel-only carry models.)

Tiffin Food Jars: bring lunch with confidence (Tiffin 50 / Tiffin 100) 

Want heat retention + clean taste for meals? Try Tiffin 50 / Tiffin 100: a stainless outer paired with an inner glass container (about 500 mL or 1000 mL options). The glass insert resists flavor carry-over and is microwave- and dishwasher-safe; the silicone sealing lid helps prevent leaks. Great for soups, porridge and meals, and also for fridge storage (marinades, fruit, desserts, dry goods). Used together with the outer jar, you get extended temperature retention—handy for school, commute and family days out.

👉 Shop & ask: Camel JD Official Store ›

Buy on JD for peace of mind

  • Official direct channel: Clear source, authentic goods, unified after-sales standards.

  • Multi-warehouse fulfillment: Shipped via JD Logistics with trackable progress (per product-page promise).

  • Mainstream payments / invoicing: WeChat Pay / Alipay / UnionPay; invoicing per store policy.

  • Efficient consultation: Capacity, materials and scenario matching—ask the store team to pick faster.

👉 Go now: Camel JD Official Store ›

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