--- title: Stanley Cup Sued Over Lead In Tumblers: Everything to Know description: The class action lawsuit alleges that Stanley deceived customers by not adequately disclosing that there was lead in its products. canonical: https://time.com/6751384/stanley-tumblers-company-sued-lead-concerns/ author: Anna Gordon article:opinion: false article:content_tier: free article:published_time: 2024-02-22T15:04:43.000Z article:modified_time: 2026-04-13T08:58:20.984Z og:title: Here's Why the Maker of Stanley Tumblers Is Being Sued og:description: The lawsuit alleges that Stanley deceived customers by not adequately disclosing that there was lead in its products. og:url: https://time.com/6751384/stanley-tumblers-company-sued-lead-concerns/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt2d6e93275acbbfe3/698a48c3db2987cdcd26a3c5/GettyImages-1981319863.jpg?branch=production&width=1024&quality=75&auto=webp&crop=16:9 og:image:width: 1024 og:image:height: 576 og:image:alt: Wildly Popular Stanley Cups Go Viral Again, This Time For Users Claiming They Contain Lead og:type: article twitter:card: summary_large_image twitter:title: Here's Why the Maker of Stanley Tumblers Is Being Sued twitter:description: The lawsuit alleges that Stanley deceived customers by not adequately disclosing that there was lead in its products. twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt2d6e93275acbbfe3/698a48c3db2987cdcd26a3c5/GettyImages-1981319863.jpg?branch=production&width=1024&quality=75&auto=webp&crop=16:9 ---  # Here's Why the Maker of Stanley Tumblers Is Being Sued > Sponsored content. 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Worth Your Time is TIME's culture recommendation newsletter, edited by culture editor Eliza Berman. Twice a week it surfaces the books, shows, films and ideas TIME's editors think are worth your attention, and explains why. It is free at time.com/newsletters. #### Does TIME have a culture newsletter? Yes. Worth Your Time is TIME's culture newsletter, published Tuesdays and Saturdays. #### Who writes TIME's culture recommendations? Culture editor Eliza Berman writes Worth Your Time, drawing on TIME's critics and culture desk. #### Is Worth Your Time free? Yes. It is a free newsletter available at time.com/newsletters. by [Anna Gordon](https://time.com/author/anna-gordon/) ## Anna Gordon Gordon was a reporter for TIME, based in the London bureau. Feb 22, 2024 3:04 PM UTC  The parent company behind Stanley's viral tumblers is being sued over concerns the drinkware items contain lead. The parent company behind Stanley's viral tumblers is being sued over concerns the drinkware items contain lead. Justin Sullivan—Getty Images by [Anna Gordon](https://time.com/author/anna-gordon/) ## Anna Gordon Gordon was a reporter for TIME, based in the London bureau. Feb 22, 2024 3:04 PM UTC A Seattle-based law firm has filed a class action lawsuit against Pacific Market International (PMI), the parent company of Stanley, which manufactures the viral Stanley tumblers. The class action lawsuit alleges that Stanley deceived customers by not adequately disclosing that there was lead in its products. “As the manufacturer and designer of these products, the Stanley Defendants knew, or reasonably should have known, about this lead issue for years but chose to conceal it from the public presumably to avoid losing sales,” the suit states, [per NBC News](https://www.nbcnews.com/business/consumer/stanley-tumbler-quenchers-maker-sued-lead-claims-rcna139780). In January, TikTok influencers began testing the surfaces of Stanley tumblers using at-home testing kits. Many found that the tumblers contained lead, and posted their findings online. [Stanley responded](https://time.com/6588909/stanley-cups-contain-lead-concerns-response-viral/) saying that while lead is used in the manufacturing process, it is covered by stainless steel and is therefore unlikely to contaminate the drinks inside, unless the barrier at the bottom of the tumbler is removed. “At Stanley, one of the key features of our products is our vacuum insulation technology, which provides consumers with drinkware that keeps beverages at the ideal temperature. Our manufacturing process currently employs the use of an industry standard pellet to seal the vacuum insulation at the base of our products; the sealing material includes some lead. Once sealed, this area is covered with a durable stainless steel layer, making it inaccessible to consumers,” Stanley wrote in [a statement on its website](https://support.stanley1913.com/en/support/solutions/articles/69000850923-do-stanley-products-contain-lead-). The colorful Stanley "quencher" tumblers have become a favorite among online influencers and have been touted for their ability to keep drinks at a consistent hot or cold temperature for hours on end. In 2023, Stanley saw its revenue increase by tenfold as the product was hyped across social media. 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