U-Konserve
U-Konserve Insulated Food Jar
Best insulated container for commuters wanting warm or chilled homemade meals.
Enjoy your meals at the perfect temperature with the U-Konserve Insulated Food Jar. This durable, double-walled stainless steel jar is designed to keep your food hot for up to 5 hours or cold for at least 8 hours. Ideal for packing soups, chili, smoothies, or yogurt, it helps you eat healthier and reduce food waste on the go. Simply pre-heat with hot water for hot meals or pre-chill for cold dishes to maximize its temperature retention capabilities.
$17.95
Owner Satisfaction
4.5
/ 5
Category Rank
535
/ 987
#535 in Thermoses
Price vs Category Average
-66%
Below average
Capacity
12
/ oz
Who it's for
- Commuters needing hot lunches throughout the workday
- Eco-conscious shoppers prioritizing plastic-free, durable kitchenware
- Busy parents seeking easy-to-clean containers for school lunches
Who should skip it
- Commuters carrying heavy bags who prioritize lightweight gear
- Busy professionals who rely on dishwasher-safe convenience
- Budget-focused buyers looking for inexpensive food storage solutions
Performance breakdown
Thermal retention
Reliable temperature control for standard workday lunch windows.
Build durability
Stainless steel construction withstands daily commutes and accidental drops.
Cleaning accessibility
Wide mouth design makes scrubbing out stubborn food residue effortless.
Portability
Compact size fits easily into most bags without adding unnecessary bulk.
Seal integrity
Screw-top closure provides a secure, leak-proof barrier for liquid meals.
Capacity utility
Twelve ounces is perfect for snacks but limited for hearty appetites.
Key Specs
Capacity
12 oz
Hot food retention
Up to 5 hours
Cold food retention
At least 8 hours
Material
Stainless Steel
Insulation Type
Double Wall
Closure Type
Screw Top
Drinking Spout Type
Wide Mouth
Intended Use
Office
Features
- Double-walled insulation for temperature retention
- Keeps food hot or cold for hours
- Reduces food waste and promotes healthy eating
- Durable stainless steel construction
- Wide mouth for easy filling and cleaning
- Portable for on-the-go meals
What customers say
Customers overwhelmingly praise the U-Konserve Food Jar for its exceptional reliability and premium quality. The stainless steel construction is consistently highlighted for its durability and ease of cleaning, reinforcing a feeling of lasting value. Its superior insulation keeps food hot for hours, making it perfect for daily meals. Users appreciate that this durable container supports a sustainable lifestyle by reducing waste. While the initial cost is slightly higher, the consensus is that its long-term performance and robust build justify the investment. The jar successfully delivers on its promise of dependable thermal retention and solid construction.
Know before you buy
To maximize heat retention, pre-heat the jar by filling it with boiling water for a few minutes before adding your food. Once you pour the water out, immediately add your hot meal and seal the lid tightly.
Yes, the jar features a secure screw-top closure designed to prevent leaks, making it safe to carry in your bag or backpack.
The wide-mouth design makes it easy to clean by hand with a bottle brush and warm soapy water. While the stainless steel is durable, we recommend hand washing to maintain the integrity of the vacuum insulation.
Absolutely. The double-walled insulation works just as well for cold foods as it does for hot ones, keeping items chilled for at least eight hours. For best results, place the jar in the refrigerator or freezer for a few minutes before filling it.
Yes, the jar is constructed from high-quality stainless steel, which is a non-reactive material that won't leach chemicals or retain flavors from previous meals.
Still have a question?
Ask Hayley anything about this product before you decide.