Light and swift with impact protection. Features Helion™ superfoam so running on hard surfaces never felt easier. Details: - Lightweight performance knit upper - Signature speed-lacing system - Structured arch support - Helion™ Superfoam injected CloudTec sole for cushioned, yet responsive movement - SpeedboardTM technology and supportive side panels - Reflective accents - Rubber sole - Material: Textile, Rubber