The all-new x-cell lightspeed features our state-of-the-art x-cell technology built for support and comfort. It has an overlay cage detail that adds durability and a bold visual. The upper features a lac- up construction for optimal fit. That running goal has never been so close. Features and benefits softfoam step-in comfort sockliner designed to provide soft cushioning thanks to its extra thick heeldetails outsole 100% rubber midsole x-cell upper a mix of textured and premium materials.