What happened to Stanley cups, and how are they planning a comeback?


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Summary

Lost momentum?

Stanley cups lost momentum after a viral rise on TikTok, with users now reporting issues like mold buildup, leaking lids and even concerns over lead.

Addressing concerns

The company has responded to health concerns on its website, clarifying that while a lead pellet is used for insulation, it doesn’t come into contact with consumers or the contents of the cup.

Looking ahead

Stanley is expanding internationally and developing new products, including athlete-friendly bottles and wellness-focused options like protein shake containers.


Full story

Stanley cups rose to fame on TikTok, but the hype may be over. Once a must-have item, the viral tumblers that sparked long lines and chaotic store drops are seeing a dip in popularity — and some backlash. 

From viral craze to quieter shelves

Founded in 1913, Stanley saw a massive surge in popularity in 2019, thanks to TikTok influencers and color-coordinated cup collectors. At one point, limited-edition releases led to crowds, fights and even resale markets. Barbie x Stanley collection cups reached nearly $1,000 on eBay at one point. 

But in 2024, the excitement seems to have faded. The Wall Street Journal reported Stanley’s revenue reached $750 million in 2023 — yet the company declined to share more recent figures.

Leaks, mold and mixed reviews

One reason for the slowdown? Product issues. A quick search on TikTok reveals videos of users frustrated by leaking lids, prompting some to switch to leak-proof brands like Owala.

Others have reported mold concerns. One user told Straight Arrow News she noticed visible mold inside her Stanley cup even after hand-washing and running it through the dishwasher. She said the company advised her to clean it again and offered a 20% discount on a new cup, but she ultimately threw hers away and doesn’t plan to repurchase another one.

As of this article’s publication, Stanley has not responded to a request for comment on whether it plans to address mold-related complaints or update product designs.

Lead concerns spark more questions

Also circulating online last year: videos claiming Stanley cups contain lead. According to the World Health Organization, long-term lead exposure can cause serious health problems, including kidney damage and cardiovascular issues.

Stanley directly addressed the concern on its website

“Rest assured that no lead is present on the surface of any Stanley product that comes into contact with the consumer, nor the contents of the product,” a statement from the company said.

The company explained that its products contain a small lead pellet in the base, which helps create vacuum-sealed insulation to keep beverages hot or cold for extended periods.

New products on the horizon

Despite online criticism, Stanley said it’s looking ahead. The company is expanding into new markets, such as Europe, and exploring products beyond water bottles.

Graham Nearn, Stanley’s chief product and sustainability officer, told the Journal: “Hydration is also more than water. It’s also things like protein shakes and vitamins and health.”

The company is also designing bottles with athletes in mind, including options without screw-tops or straws.

As for short-term goals, the company is launching a collaboration with musician Post Malone on June 16. Stanley has collaborated with other popular figures in the past, including Olivia Rodrigo, and even a “Wicked” collaboration ahead of its theater release.

Cassandra Buchman (Digital Producer ) and Harry Fogle (Video Editor) contributed to this report.
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Why this story matters

The evolving popularity and scrutiny of Stanley cups highlights changing consumer trends, the influence of social media and the growing importance of product safety and company transparency in the consumer goods market.

Viral consumer trends

Stanley cups illustrate how social media platforms like TikTok can rapidly boost a product's visibility and sales, but also how such trends can quickly fade.

Product safety concerns

Reports of mold, leaks and allegations of lead presence emphasize consumer demands for greater product quality and transparency from manufacturers.

Corporate response and adaptation

Stanley's efforts to address criticism, adapt its product line and pursue new markets underscore how brands must respond proactively to maintain relevance and consumer trust.