Multiple outlets report that experts have issued warnings related to wearing Crocs, a widely popular summer shoe for children and also worn by adults. The articles note that Crocs were long associated with utilitarian settings—such as hospital work, gardening, and children’s wear—but that the brand has since become a mainstream fashion choice over the past two decades. The reporting says the concern focuses on “silent” or less noticeable effects that may develop with use, rather than immediate, obvious injuries. However, the provided source excerpts do not specify the exact medical or material mechanisms, the populations most affected, or the extent of any harm. The pieces also frame the issue as potentially relevant beyond children, suggesting that adults who wear similar casual slip-on footwear may also be impacted, including those who favor other comfort brands such as Birkenstock. Overall, the coverage centers on an expert caution about Crocs’ potential downsides while also describing the shoe’s broader rise in popularity and changing public image.