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

Hydro Flask

Stainless Steel Wide Mouth Water Bottle - 40oz

Last verified: December 10, 2025

Why This Product is Rated GO

Stainless Steel Wide Mouth Water Bottle - 40oz by Hydro Flask 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

Stainless Steel Wide Mouth Water Bottle - 40oz by Hydro Flask - Non-toxic Water Bottles + Drinkware product rated GO by Million Marker, free from BPA, phthalates, and parabens

Where to buy

Hydro Flask Google Search

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