Products are split into three levels based on ingredient labels

GO
Best choice
SLOW
Contains ingredients with possible health concerns
STOP
Contains harmful ingredients
GO

Stanley

Classic Legendary Thermus

Last verified: December 8, 2025

  • Stainless steel

Why This Product is Rated GO

Classic Legendary Thermus by Stanley has been evaluated by Million Marker and meets our strict safety standards. This product is rated GO, meaning it is free from harmful chemicals like BPA, phthalates, parabens, and other endocrine-disrupting compounds.

Products with a GO rating represent the safest choices in their category and are recommended for everyday use.

Learn more about how Million Marker scores products →

Frequently Asked Questions

Classic Legendary Thermus by Stanley - Non-toxic Water Bottles + Drinkware product rated GO by Million Marker, free from BPA, phthalates, and parabens

Where to buy

Stanley Google Search

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