Two more track and field athletes have filed lawsuits against Puma and Mercedes’ Formula 1 team over an alleged failure to disclose that the carbon-plated shoes the companies marketed “could place abnormal and unnecessary stress on athletes’ feet and lower legs, contributing to life-altering injuries.”Jamaican Olympian Damion Thomas Jr. and American World Championship gold medalist Champion Allison are the latest athletes to sue the two companies in the United States regarding the sneakers. U.S. track star Abby Steiner filed her complaint in late April, claiming that the shoe designs, as well as the carbon fiber plate and/or nitrofoam technology “changed the foot and ankle mechanics during running that may contribute to or increase the risk of injury.”Mercedes declined to comment when contacted by The Athletic. Puma has been approached for comment. Both Puma and Mercedes said at the time Steiner’s claim became public that they could not comment on ongoing litigation. However, Puma added that “we strongly deny any allegation that our performance products cause injuries”.In Steiner’s lawsuit, four products in particular were mentioned: the Deviate Nitro Elite 2 and 3, evoSpeed Tokyo Nitro, evoSPEED Tokyo Nitro 400M, and any others that utilize the carbon fiber plate or nitrofoam technology.“When I learned about Abby Steiner’s lawsuit, it was the first time I considered that what happened to me wasn’t just bad luck,” Thomas Jr., who competed in the 110m hurdles at the 2020 Olympics, said in the news release. “Like a lot of athletes, I assumed my injury was something I had to deal with on my own. If it took a lawsuit for me to realize I wasn’t alone, there have to be thousands of other athletes out there who still don’t know.”