Brand file
Every Hydro Flask product we have scored, with the maker’s own words about materials and what those words leave out. Average across the range: 62.5 out of 100.
Longer read: we have a full write-up of this brand — Klean Kanteen vs Hydro Flask.
We have scored 4 Hydro Flask products. They average 62.5 out of 100 on materials, and the spread between the best and worst is 15 points.
Of those 4: 4 name the surface that touches food at least to a material family; 0 state a country of manufacture; 0 have a materials claim backed by anything other than the maker’s own word.
| Product | Category | Score /100 | What it is made of |
|---|---|---|---|
| Hydro Flask 12 oz Kids Food Jar · US | Lunchboxes | 68 | “18/8 pro-grade stainless steel” · lid plastic, Flex Boot and gasket materials all unstate |
| Hydro Flask 32oz Wide Mouth · AU | Bottles | 68 | 18/8 “pro-grade” stainless · Colour Last powder coat · no lid, straw or gasket polymer nam |
| Hydro Flask Kids 12 oz Bottle · US | Bottles | 61 | Stainless steel, grade not stated · double-wall vacuum · plastic cap, type not stated |
| Hydro Flask 32 oz Wide Mouth · US | Bottles | 53 | “Stainless steel” and “TempShield® double-wall vacuum insulation” — no grade, no lid polym |
Click a product to read the full record — the exact wording the maker uses, what is missing, and every source. Scores are out of 100 and measure materials, not safety: 68/100 means “mostly inert”. The rubric is here.
Hydro Flask appears in Bottles · Lunchboxes. The Australian and American editions are scored the same way, so a product marked AU and one marked US are directly comparable.
New scores, brands that finally answered, and any rule change that affects what you can buy. The list is not open yet — email us and we will add you when it is.