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  Do Stanley and Yeti Cups Contain Nickel?

  Team Yogi @ Aug 26, 2026

  Yes — and it isn't brand-specific.
  Stainless steel contains nickel by definition. Grade 304 is typically 8–12% nickel; grade 316 runs 10–14%. That applies to essentially every stainless tumbler on the market.

  Here's how to check what yours is made of, what the research says about transfer into your drink, and why it matters more to some people than others.