Thermos Stainless King Flask - 470ml - Copper
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Product Information
Full details
This guide is for anyone seeking a reliable, high-performance insulated flask for daily use or outdoor adventures. The Thermos Stainless King Flask excels at maintaining beverage temperature for extended periods, making it ideal for hot coffee on a cold morning or a refreshing cold drink on a hike. While its robust stainless steel construction ensures durability, its 470 ml capacity might require refills for very long excursions.
All features
| Colour | Copper |
|---|---|
| Brand | Thermos |
Extended Product Information
FAQs
Is this flask dishwasher safe?
For best longevity and to preserve the vacuum insulation, hand washing with warm soapy water is recommended for all parts.
What liquids can I put in this flask?
It is suitable for most non-carbonated hot and cold beverages, including coffee, tea, soup, water, and juices. Carbonated drinks are not recommended.
How do I ensure my drink stays hot/cold for the longest time?
Always pre-heat or pre-chill your flask before adding your beverage. Fill with hot water for hot drinks or cold water/ice for cold drinks, let sit for 5-10 minutes, then empty before adding your main drink.
What is the 50-year guarantee?
The 50-year guarantee covers manufacturing defects and material faults, reflecting the high quality and durability Thermos expects from this product. Refer to the manufacturer's specific guarantee terms for full details.
Can I use this flask for food, like soup?
Yes, the Thermos Stainless King Flask is suitable for keeping soups hot. Ensure the soup is not chunky to avoid issues with the twist-and-pour mechanism, or consider pouring directly from the flask opening without using the stopper's pouring function if the chunks are large.
What is the capacity of this flask?
This particular model has a capacity of 470 ml.
Why does the exterior of the flask feel cool when I have hot liquid inside?
This is a sign that the vacuum insulation is working correctly. The exterior remains cool to the touch because the vacuum layer effectively prevents heat transfer from the hot liquid inside to the outside surface.
Troubleshooting
Beverage not staying hot/cold for advertised duration.
Ensure the flask was properly pre-heated or pre-chilled before use. Make sure the stopper and lid are securely tightened to maintain the vacuum seal. Check for any visible damage to the flask or stopper that might compromise the seal.
Difficulty pouring or stopper feels stiff.
Disassemble the twist-and-pour stopper and clean all its components thoroughly. Residue from beverages can sometimes cause stiffness. Reassemble carefully, ensuring all parts are correctly aligned.
Unpleasant odor inside the flask.
Wash thoroughly with warm soapy water and a bottle brush. For stubborn odors, fill the flask with a mixture of baking soda and warm water, let it sit overnight, then rinse thoroughly. Ensure the flask is completely dry before storing.
Pros and Cons
Pros
- Exceptional temperature retention for both hot and cold beverages.
- Highly durable, designed to withstand significant wear and tear.
- Convenient built-in drinking cup and spill-proof pouring mechanism.
- Safe to handle with hot liquids and free from condensation with cold ones.
- Long-term peace of mind with a 50-year guarantee.
Cons
- 470 ml capacity may be insufficient for all-day hydration needs without refilling.
- Stainless steel construction can be heavier than plastic alternatives.
- Not suitable for carbonated beverages due to pressure buildup.
- Requires manual cleaning (not specified as dishwasher safe).
Setup, Compatibility & Care
Initial Setup:
- Before first use, wash all parts of the flask thoroughly with warm soapy water.
- Rinse well and allow to dry completely.
Priming for Best Performance:
- For Hot Beverages: Pre-heat the flask by filling it with hot water for 5-10 minutes, then empty before adding your hot drink.
- For Cold Beverages: Pre-chill the flask by filling it with cold water (or ice water) for 5-10 minutes, then empty before adding your cold drink.
Compatibility:
- Suitable for a wide range of non-carbonated hot and cold beverages, including coffee, tea, soup, water, and juices.
- *Not recommended for carbonated drinks.*
Care and Maintenance:
- Cleaning: Hand wash with warm, soapy water. Use a bottle brush for thorough cleaning of the interior. Rinse all components well.
- Drying: Ensure all parts, especially the stopper, are completely dry before reassembling and storing to prevent odors or mold.
- Storage: Store with the stopper slightly ajar or removed to allow air circulation.
- Avoid: Do not use abrasive cleaners or scrubbers. Do not immerse the entire flask in water for extended periods.