The Adizero Prime X3 Strung features a precision-built upper that provides flexibility and support. Three stacked layers of Lightstrike Pro cushioning are paired with a carbon plate and carbon-infused Energyrods 2.0 for responsiveness. The Lighttraxion outsole is designed for traction, while Continental™ rubber on the toe-off provides grip on road surfaces. regular fit laces textile upper textile sockliner Lighttraxion outsole Lightstrike Pro cushioning Continental™ rubber outsole