Thermos
Thermos King Big Boss Stainless Steel Insulated Food Jar
Best insulated food jar for commuters needing versatile, multi-course meal storage.
The Thermos King Big Boss Food Jar offers exceptional temperature retention with its vacuum insulation technology, keeping food hot for up to 10 hours or cold for up to 24 hours. Constructed from durable stainless steel, this large-capacity jar features a sweat-proof exterior for comfortable handling. It includes two 20-ounce BPA-free containers that are both microwave and dishwasher safe, making it versatile for various meals. The built-in carry handle adds convenience for transport, making it ideal for packing lunches or snacks.
$66.19
Owner Satisfaction
4.6
/ 5
Category Rank
306
/ 987
#306 in Thermoses
Price vs Category Average
+25%
Above average
Capacity
47.
/ oz
Who it's for
- Outdoor adventurers demanding rugged, long-lasting gear
- Commuters needing hot meals hours after packing
- Hungry workers requiring substantial, hearty lunch portions
Who should skip it
- Busy individuals prioritizing dishwasher-safe convenience
- Minimalists carrying small bags or light packs
- Budget-conscious shoppers seeking basic, affordable food storage
Performance breakdown
Thermal Retention
Industry-leading vacuum insulation keeps meals steaming hot for hours on end.
Build Durability
Rugged stainless steel construction withstands daily commutes and rough outdoor handling.
Meal Versatility
Dual microwave-safe containers allow for diverse, multi-course lunch packing options.
Portability
Integrated carry handle makes transporting this large-capacity jar surprisingly effortless.
Cleaning Convenience
Dishwasher-safe components simplify the post-meal cleanup process significantly.
Exterior Ergonomics
Sweat-proof finish ensures a secure, dry grip regardless of internal temperature.
Key Specs
Capacity
47 oz.
Material
Stainless steel
Includes two 20-ounce BPA-free containers
Containers are microwave and dishwasher safe
Features
- Thermos vacuum insulation technology for maximum temperature retention
- Durable stainless steel construction
- Sweat-proof exterior
- Two BPA-free, microwaveable, and dishwasher safe inner containers
- Built-in carry handle for easy transport
What customers say
Customers consistently praise the Thermos King Big Boss Food Jar for its exceptional quality and reliable performance. Users frequently highlight its superior insulation, noting how effectively it keeps food hot for extended periods, making it ideal for long days away from home. The robust stainless steel construction also contributes to a strong sense of durability, assuring consumers of a long lasting product. This dependable temperature retention and sturdy build are recurring positive themes.
Know before you buy
No, the stainless steel outer jar should be hand-washed to preserve the vacuum insulation and finish. Only the two inner BPA-free containers are dishwasher safe.
The vacuum insulation is designed to keep food hot for up to 10 hours. For the best results, we recommend pre-heating the jar with boiling water for a few minutes before adding your hot food.
The inner containers are designed for food storage and are microwave safe, but they are not intended to hold liquids like soups or sauces on their own. The main stainless steel jar acts as the primary leak-proof vessel for the entire unit.
Yes, you can place food directly into the stainless steel jar if you prefer. However, using the containers helps keep different food items separated and makes cleanup easier.
No, the jar features a sweat-proof design. The exterior remains dry and comfortable to hold regardless of whether you are storing hot or cold contents inside.
The total capacity of the main stainless steel jar is 47 ounces. It comes with two 20-ounce inner containers, allowing you to pack a substantial lunch or multiple snacks.
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