Athlete-Inspired DetailsJa’s signature, logo, and jersey number are sketched in his own handwritingDesign:Lightweight, breathable material on the upper helps keep your feet cool Containment system and forefoot strap help keep your ankle and heel stable In-Shoe Comfort:Raised foam collar adds ankle support Forefoot Zoom Air unit helps provide increased responsiveness and vertical acceleration Plush cushioning in the midsole provides added comfort