39% recycled, breathable engineered mesh and TPU upper Lightweight FlexPlate technology provides torsional rigidity, lateral stability, and forefoot flexibility. FloatPro Foam midsole for lightweight comfort that lasts Vibram TC5+ outsole provides exceptional traction for outdoor multi-sport activities, formulated exclusively for Merrell Vibram traction lugs specifically designed to increase traction and shed debris with each step Lining: Mesh