Thermos Boîte alimentaire isotherme 0.47L
(37 reviews)
This Thermos insulated food jar keeps a meal hot for up to 9 hours or cold for up to 14 hours, no microwave needed, for the office or school.
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Key features
- Capacity: 0.47 L
- Material: Double-wall stainless steel, vacuum insulation (Thermax technology), BPA-free
- Heat retention: 9 hours (stays above 58°C after 6h in the manufacturer's tests)
- 100% airtight seal, compact size for a solo meal
In detail: Thermos Boîte alimentaire isotherme 0.47L
The Thermos 0.47-liter insulated food jar answers a common need: carrying a hot meal without relying on a microwave wherever it is eaten, whether at the office, at school or on an outdoor picnic. This insulated food jar relies on the vacuum double wall developed by Thermos, its Thermax technology, which keeps the dish at temperature for hours after filling.
Using it is simple: briefly preheat the container with boiling water before emptying it and pouring in the still-hot dish, a tip commonly recommended to optimize heat retention over time. The manufacturer states 9 hours of heat retention and 14 hours of cold retention, with precise thresholds recorded at 6 hours: the dish stays above 58°C on the hot side and below 11°C on the cold side, more than enough to last through to lunch for an early morning departure.
The 0.47-liter size suits an individual portion of a main dish, such as rice, pasta or a dish in sauce, without being oversized for daily use at the office or school. The wide opening makes filling as well as cleaning after use easy, and the twist-lock closure guarantees a total seal in a bag, even carried lying flat. The top part is dishwasher-safe, simplifying day-to-day upkeep.
Its main limitation lies in its use: unlike a classic plastic box, it cannot go in the microwave because of its stainless steel wall, and preheating with boiling water requires planning a few minutes ahead before filling it. For anyone looking to reduce their reliance on dishes reheated on the spot, whether for lack of access to a microwave or by preference for a home-cooked meal, this Thermos insulated food jar keeps a meal at the right temperature right up to lunch break, with no compromise on taste or on ease of carrying.
Technical data
Detailed characteristics
Performance
| Heat retention?How long the container keeps its contents hot. | 9 hours (stays above 58°C after 6h in the manufacturer's tests) |
|---|---|
| Cold retention?How long the container keeps its contents cold. | 14 hours (stays below 11°C after 6h in the manufacturer's tests) |
Dimensions and material
| Capacity?Usable volume of the container, in litres. | 0.47 L |
|---|---|
| Material?Main material used to make the container. | Double-wall stainless steel, vacuum insulation (Thermax technology), BPA-free |
| Dimensions?Width, depth and height of the container (W x D x H). | 9.7 x 9.7 x 14.2 cm |
| Weight?The container's empty weight. | About 381 g |
Additional information
| Care?Cleaning and care recommendations for the container. | Top part dishwasher-safe, body hand-wash only |
|---|
Comparison
In the €35 to 50 range, the Thermos Stainless King insulated food jar regularly comes up against the Stanley Classic Legendary Food Jar 0.4L and the Zojirushi SW-EAE35, two other names cited in searches like "insulated food jar comparison". Here is how these three jars stack up against each other, based on the specifications published by each manufacturer.
| Criterion | Thermos Stainless King 0.47L | Stanley Classic Legendary 0.4L | Zojirushi SW-EAE35 0.35L |
|---|---|---|---|
| Capacity | 0.47 L | 0.4 L | 0.35 L |
| Heat retention | 9 hours | 7 hours | 6 hours (above 57°C) |
| Cold retention | 14 hours | 7 hours | About 10 hours |
| Weight | ≈ 381 g | 340 g | ≈ 142 g |
| Price observed | €38.18 | ≈ €48 (official Stanley EU price) | ≈ €44 (official Zojirushi US price, imported) |
In summary, the Thermos Stainless King wins on capacity and on cold retention, at a noticeably more affordable price than its two rivals. The Stanley wins fans over with its rugged, outdoor-bottle-style design but offers shorter retention at this compact size, while the Zojirushi banks on extreme lightness at the cost of reduced capacity. For a full meal carried every day, the Thermos remains the most versatile choice of the three.
Our tester's verdict: Yoni Marchal-Laporte
This Thermos Stainless King jar is among the undisputed best-sellers in its category on Amazon, with more than 5,000 reviews and a 4.5/5 rating that holds steady despite that volume, a rare signal of reliability in this segment. The principle really works: a quick preheat with boiling water before pouring in the dish, and the heat holds well through to lunch, even for an early morning departure. The twist-lock closure prevents any leaks in a bag, a point confirmed by many users who carry it to the office every day. The 0.47-liter size suits a generous portion of rice, pasta or a dish in sauce nicely, without being bulky. Two drawbacks to know about: it is not designed for the microwave, logically enough given its metal double wall, and preheating needs to be planned a few minutes ahead of filling. For anyone looking for a reliable alternative to a shared office or school microwave, this is a safe bet we recommend without hesitation.
Frequently asked questions: Thermos Boîte alimentaire isotherme 0.47L
Preheat it for a few minutes with boiling water before emptying it and pouring in the still-hot dish: this simple step noticeably improves heat retention over time and lets it hold for hours with no significant temperature loss.
The manufacturer states 9 hours of heat retention, with a dish kept above 58°C after 6 hours in its own tests. That is enough to easily go from a morning preparation through to lunch break.
No, its stainless steel double wall rules out any use in the microwave, as with almost all metal insulated jars. That is precisely the point: the dish stays hot without needing to be reheated on the spot.
The top part is dishwasher-safe, while the stainless steel body is cleaned by hand with warm soapy water. This simple upkeep partly explains the 4.5/5 rating earned across more than 5,000 customer reviews.
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Page published on 1 July 2026, updated on 31 July 2026