Drinkware lead guides

Last reviewed July 2026.

Every brand we track, plus the background guides. Each brand page answers one question — what seals the vacuum, and who says so? — with the brand's own statements and the public record, linked. The guides cover the sealing engineering and the label-reading you need to judge any of it.

Does it have lead? brand by brand

• Does Hydro Flask have lead?
• Does Owala have lead?
• Does Klean Kanteen have lead?
• Does Yeti have lead?
• Does Stanley have lead?
• Does Simple Modern have lead?
• Does RTIC have lead?
• Does Corkcicle have lead?

Sealing, testing & the record

• “Cold for 24 hours”: what the label claim actually means — and what a thermometer says
• The Stanley lead story, from the record: what was claimed, filed and dismissed
• Lead pellet vs lead-free sealing: how insulated bottles actually get sealed
• XRF vs leach testing for bottles: sealed dots, accessible surfaces, and what counts
• What a damaged base cap changes — and what it doesn't

Drinkware Score indexes what brands publish about their vacuum-seal construction and what the public record shows, with attribution — we test nothing and make no health claims. A verdict describes the state of the published evidence about a sealing method, not the safety of any bottle. A sealed, inaccessible component containing lead is a different fact from lead a user can touch, and we keep those facts separate on every page. If a brand publishes new evidence, the page changes — the source always wins.