Thermos FUNTAINER Food Jar Frozen II model 4114.414.030 — insulated double-wall stainless steel, 0.3 L

Thermos FUNTAINER Food Jar Frozen II model 4114.414.030 is a 0.3 L insulated food container made from double-wall stainless steel with vacuum insulation. Designed to maintain the temperature of foods and liquids for several hours, this compact food jar provides a leak-resistant lid and a robust exterior suitable for daily use, packed lunches, and outdoor activities. The product name and simple construction emphasise practical temperature retention and portability for single servings.

Advantages

The double-wall stainless steel construction with vacuum insulation reduces heat transfer, helping to keep contents hot or cold for extended periods. The 0.3 L capacity balances portion control and portability, making it convenient to carry in a backpack or lunch bag. A secure, screw-on lid helps minimise spills during transport and the stainless steel interior is easy to clean and resists stains and odours compared with many plastic alternatives.

Suitable for

• Packed lunches: soups, stews, pasta or rice dishes
• Baby food and purees for short outings
• Cold snacks such as yogurt, fruit, or salads
• Outdoor activities like hiking, picnics, and school trips

When it may not be suitable

This 0.3 L food jar is intended for single servings; it may not be suitable when larger meal portions or family-sized servings are required. It is not designed to be microwave-safe due to the stainless steel construction; reheating should be done outside the container.

Key specifications

• Capacity: 0.3 litres
• Material: double-wall stainless steel (interior and exterior)
• Insulation: vacuum insulated between walls
• Closure: secure screw-on lid for transport
• Intended use: hot and cold food storage for several hours
• Finish: durable exterior suitable for daily use

How to use

Preheat or precool the jar by filling it with hot or cold water for a few minutes, then empty before adding the food to improve temperature retention. Fill the jar without overpacking and close the screw-on lid firmly to ensure a leak-resistant seal. For safety and longevity, avoid putting the stainless steel jar in a microwave and wash the lid and jar according to manufacturer care instructions; hand washing is recommended for the lid and exterior components to maintain seals.

What to consider before purchase

• Portion size: 0.3 L capacity suits single servings only
• Reheating: container is not microwave-safe
• Cleaning: check whether lid components require hand washing
• Weight and fit: ensure the jar dimensions and weight meet your bag or carrier requirements

Usage recommendations

For best temperature retention, preheat with hot water or precool with cold water before filling. Close the lid tightly, store upright during transport, and clean promptly after use to prevent odours or staining. Use the jar for single-portion meals and avoid reheating inside the container.