PUMA Speed 300 Ignite Running Shoes Seamless Upper - Envelopes the wearer within a lightweight, breathable environment. Reflective Overlays - Provide visibility and safety. neutralCELL - Ensures optimal cushioning and flexibility for an efficient, smooth run IGNITE Foam Midsole - Disperses impact forces while providing optimal responsiveness and energy return. EcoOrthoLite Sockliner - Enhances interior comfort.