01Gold Standard
Wide Mouth Bottle
$30-50
stainlessinsulatedlead-free
Only major brand consistently testing 100% lead-free. First to eliminate lead solder in 2014. 18/8 medical-grade stainless steel.
Quality Score12/12
Purity
Evidence
Transparency
Value
Strong Evidence
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Ingredients & Purity
18/8 food-grade stainless steel. Third-party tested for FDA and Prop 65 compliance.
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Scientific Evidence
Independent Lead Safe Mama testing verified lead-free construction.
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Brand Transparency
Published material specs. No coatings on interior.
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Value Assessment
$30-50. Keeps cold 24h, hot 12h. Lifetime of use.
Why Not Alternatives?
Stanley had lead scandal 2024—lead solder exposed when bottom cap damaged. Yeti and generics often use lead in bottom soldering. Glass is safe but breaks.