Designed for short trail runs on non-technical terrain, this model features the Cloud Tec Phase™ cushioning system for a smooth sensation and a Missiongrip™ outsole for reliable traction. true to size Cloud Tec Phase™ cushioning system Helion™ foam Missiongrip™ rubber outsole protective, breathable and abrasion-resistant upper precision-engineered midsole using finite element analysis improved heel fit and padded lining bigger lugs in a chevron shape