U-Konserve Square Stainless Container 16oz
A lunch container from a B Corp built to outlast plastic.
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The rating, unpacked
Our overall rating is the weighted average of these sub-scores. Category-specific criteria appear alongside the universal ones — no black boxes.
The wider verdict
Pros
- Silicone lid genuinely leakproof
- Fridge to freezer to dishwasher
- Climate Neutral certified
Cons
- Not microwave-safe (steel)
- Heavy compared to plastic
Full specs
- Best for
- Lunch packers who want one container that survives every household cycle.
- Material
- 18/8 stainless + platinum silicone lid
- Capacity
- 470 ml
- Weight
- 220 g
- Insulated
- Leakproof
- Dishwasher safe
- BPA-free
- Recyclable
- Country of origin
- India
- Warranty
- 5 years
- Certifications
- B Corp, 1% for the Planet, Climate Neutral
How we scored it
Our overall rating blends five weighted factors — materials & construction, everyday usability, durability & longevity, sustainability credentials, and value for money — with small category-specific tweaks (insulation performance for drinkware, grip and cushion for yoga, seal integrity for food storage). The sub-scores above are the rating; we then cross-check it against independent reviews from outlets like Wirecutter, The Guardian and Choice. If a spec, price, or long-term report changes, we update the record and re-score.