A recent article by Jonathan Beverly in RunningInsight magazine dove into the topic of flexibility of running shoes and featured quotes from Heeluxe founder Dr Geoffrey Alan Gray. This article provides insight into the trend of stiffer running shoes that was started by the Nike Vaporfly 4%. In addition to the comments from Dr. Gray, other notable leaders in the footwear industry were mentioned, including Simon Bartold, Jay Dicharry, and Ernest Kim. The article can be found at the following link.
