Wide Mouth with Straw
A durable and versatile insulated stainless steel water bottle with a plastic straw, known for keeping drinks hot or cold. It's a long-standing favorite of testing teams.
How scores are calculated
Materials (40%): How plastic-free the product is — raw materials, construction, and coatings.
Packaging (20%): Is the product packaged in plastic? Is it recyclable?
Transparency (20%): Does the brand disclose ingredients, sourcing, and manufacturing?
Durability (20%): How long does it last? Longer-lasting products reduce plastic waste over time.
This is a rating of this specific product only — not the company. Other products from this brand may score differently.
Last updated: April 4, 2026
Excellent insulation and material quality, but contains a plastic straw that can impart flavor. Certified B Corp.
Why We Rated It This Way
Hydro Flask's Wide Mouth with Straw is made from Stainless steel body, plastic straw, screw cap. Certifications: B Corp.
Chemical & Health Analysis
Each chemical of concern is broken down below — what it is, where it comes from in this product, what it does to the body, and who is most at risk.
Various plastic chemicals
Hydro Flask Wide Mouth with Straw
Potential plastic flavoring from the straw, especially with hot water.
All health claims are based on published, peer-reviewed research from the NIH, WHO, IARC, and peer-reviewed journals. This information is for educational purposes and does not constitute medical advice.
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