Quencher H2.0 FlowState Tumbler 40 oz
40 oz insulated tumbler with FlowState lid. 18/8 stainless steel body. The most viral water bottle of 2023-2024.
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 6, 2026
Tap water in the US contains detectable PFAS in over 45% of systems tested by the USGS. Plastic water bottles leach BPA, BPS, and microplastics — especially when heated. The average American gets a significant portion of their total plastic exposure from drinking water and beverage containers.
Why We Rated It This Way
Stanley's Quencher became a cultural phenomenon, but the 2024 revelation that Stanley uses lead solder in the vacuum seal base damaged consumer trust. Stanley maintains the lead is sealed and not in contact with water, but the lack of proactive disclosure is concerning.
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