Gravity Defyer Shoes are a footwear brand that launched their shoes in the year 2008, featuring a spring component as part of the shoe sole to boost impact cushioning. They were originally known for their initial logo that had a design reminiscent of sperm. The company produces a variety of performance footwear, casual footwear, and dress shoes. https://thefootwears.com/the-ftc-complaint-against-the-gravity-defyer-footwear/