The technology altered her biomechanics and triggered the stress fractures that ended her career.
Abby Steiner, once among the fastest women in America and a two-time world champion, filed suit last week against Puma and the Mercedes Formula 1 team, alleging that technologically advanced footwear designed to enhance performance instead destroyed her body and ended her career before the 2024 Olympic Trials. The case asks a question that sits at the intersection of innovation and responsibility: when the engineering meant to elevate an athlete instead breaks them, who bears the weight of that failure? Her story is a reminder that the pursuit of competitive advantage carries its own risks — and that those risks are rarely distributed equally between corporations and the human beings wearing their products.
- A decorated sprinter's career ended not on the track but in a doctor's office, her bones fractured by the very shoes designed to make her faster.
- The lawsuit names not just a sportswear giant but a Formula 1 team, exposing how motorsport engineering was transplanted into running shoes with consequences that may never have been fully tested.
- Carbon fiber plate technology has reshaped elite running over the past decade, but Steiner's complaint suggests the industry's race to innovate has moved faster than the science needed to protect athletes.
- Steiner is pursuing compensation for medical costs and a lifetime of lost earnings — prize money, sponsorships, and Olympic opportunity that vanished alongside her health.
- The case now turns on whether Puma, Mercedes, or both share liability, and whether the sports equipment industry will be forced to raise its safety standards for the athletes it profits from.
Abby Steiner was one of America's most decorated sprinters — a two-time world champion, four-time NCAA title holder, and a fixture on U.S. relay teams — when her career came to a sudden and painful end in 2024. She had been preparing for the Olympic Trials, the last step toward Paris, when her body gave out. Last week, she filed suit in Middlesex County Superior Court in Massachusetts, naming Puma and the Mercedes Formula 1 team as defendants, alleging that defective footwear provided under her $2 million sponsorship deal caused the bone stress injuries that forced her into early retirement.
The shoes at the center of the case — the Puma Deviate Nitro Elite 2 and 3, and the evoSPEED Tokyo Nitro — all featured carbon fiber plate and NitroFoam technology, engineered to alter foot strike and maximize propulsion. Steiner's complaint argues that this same technology disrupted her natural biomechanics and triggered the stress fractures that ended everything.
The presence of Mercedes as a defendant adds an unusual dimension to the case. The F1 team co-designed the shoes with Puma before later switching its partnership to Adidas. Steiner's lawsuit implies that the kind of precision engineering applied to race cars was brought into running shoe design without sufficient safety testing for human athletes. Puma continues to partner with Ferrari, McLaren, and Aston Martin in Formula 1.
Steiner is seeking damages for medical expenses and the career earnings she will never see — prize money, appearance fees, and sponsorships that would have accumulated over years of elite competition. The case raises broader questions about whether athletic equipment companies are moving too fast to innovate and too slowly to protect the people wearing their products.
Abby Steiner's career as one of America's fastest runners came to an abrupt end in the summer of 2024, and she blames the shoes on her feet. The two-time world champion and four-time NCAA title holder filed a lawsuit last week in Middlesex County Superior Court in Massachusetts, naming athletic powerhouse Puma and, in an unusual turn, the Mercedes Formula 1 team as defendants. She alleges that defective sneakers and spikes provided under her $2 million sponsorship deal caused the bone stress injuries that forced her into early retirement.
Steiner signed with Puma in 2022 at the height of her career. She was a fixture on America's world-champion relay teams, running both the 4x100 and 4x400 meters at the international level. By 2024, she was preparing for the U.S. Olympic Trials—the gateway to Paris. Instead, she competed in what would become her final professional event, her body broken by the very equipment meant to enhance her performance.
The shoes in question carry names that sound like they belong in a tech catalog: the Puma Deviate Nitro Elite 2 and 3, and the evoSPEED Tokyo Nitro. All three models incorporated carbon fiber plate and NitroFoam technology, innovations designed to give runners a competitive edge by altering how their feet strike the ground and propel them forward. According to Steiner's complaint, that alteration came at a cost. The technology, she claims, disrupted her natural biomechanics and triggered the stress fractures that ended her career.
The involvement of Mercedes adds a layer of corporate intrigue to what might otherwise be a straightforward product liability case. The Formula 1 team collaborated with Puma on the shoe design before the automaker switched its athletic gear partnership to Adidas. Mercedes no longer works with Puma, but the company maintains sponsorship deals with three other F1 teams: Ferrari, McLaren, and Aston Martin. The lawsuit suggests that cutting-edge motorsport engineering—the kind that goes into building race cars—was applied to running shoes without adequate testing for human safety.
Steiner is seeking both financial and nonfinancial damages. The complaint includes claims for medical expenses incurred treating her injuries, as well as compensation for the earnings she will never realize. A professional track athlete at her level, especially one with world championship credentials and Olympic potential, stands to earn substantial prize money, appearance fees, and sponsorship income over the course of a career. All of that is now gone.
The case raises uncomfortable questions about how athletic equipment companies validate their products before putting them on the feet of elite competitors. Carbon fiber plate technology has become standard in distance running shoes over the past decade, credited with helping runners achieve faster times. But Steiner's lawsuit suggests that the rush to innovate may have outpaced the science needed to ensure safety. Whether Mercedes' involvement in the design process created additional liability, or whether Puma bears sole responsibility, will likely be central to how the case unfolds. For now, Steiner's career stands as a cautionary tale about the gap between performance enhancement and athlete protection.
Citas Notables
Steiner was seriously injured by products using carbon fiber plate or NitroFoam technology that altered the biomechanics of runners and caused bone stress injuries.— Lawsuit complaint filed in Middlesex County Superior Court
La Conversación del Hearth Otra perspectiva de la historia
Why would a Formula 1 team be designing running shoes in the first place?
Mercedes had a partnership with Puma as their athletic gear supplier. When you're working with a company on apparel and footwear, the engineering expertise from a high-performance environment—even if it's motorsport—gets applied to the product. It's about optimization and speed.
But that's a very different kind of speed. A car and a human body operate under completely different physics.
Exactly. That's the lawsuit's argument. The technology that works in a controlled automotive environment may not translate safely to the human body. Steiner's biomechanics were altered in ways that created stress on her bones.
She was at the peak of her career when this happened.
Two-time world champion. She was supposed to be heading to the Olympics. Instead, she competed in the trials and that was it. Done.
What does she actually want from this lawsuit?
Medical bills, obviously. But also the money she would have made—prize purses, sponsorships, appearance fees. For an athlete at her level, that's substantial over a career that should have lasted another decade or more.
Does Puma still use this technology?
The company continues to work with three F1 teams, so presumably the technology is still in use somewhere in their product line. That's part of what makes this case significant—it's not just about one athlete's injury. It's about whether the equipment itself is safe.