Engineered knit upper. Featuring a low-profile external heel counter, this piece comfortably cradles your foot with advanced rearfoot support. Updated midsole with FF Blast™ plus cushioning. This helps keep the shoe lightweight while creating a more energized rebound in each step. A Litetruss™ stability feature is placed on the midsole’s inside angle. It’s designed to help keep your foot from rolling too far inward during your stride. Heel drop: 10 mm.