Verified Free
Hydro Flask Standard Mouth 621ml
Hydro Flask
Microplastic Status
Based on available ingredient data, Hydro Flask Standard Mouth 621ml does not contain known microplastic ingredients. Materials used include 18/8 stainless steel, polypropylene lid, BPA-free construction. This assessment is based on publicly available product information and ingredient databases.
How we assess productsAbout This Product
Based on available material data, the Hydro Flask Standard Mouth uses TempShield double-wall vacuum insulation with a stainless steel interior. No interior coatings or plastic linings come into contact with your drink.
Materials
- 18/8 stainless steel
- polypropylene lid
- BPA-free construction
Where to Buy in the UK
Amazon £30-40
Buy on Amazon Buying Guide
Want to compare all microplastic-free water bottles? Read our comprehensive guide.
Best Microplastic-Free Water Bottles UK Added: 23 February 2026 | Last verified: 11 April 2026
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