Best for: Longer runs USP: Dual density Zig Midsole provides support while being soft and springy. Feature 1: Springy Floatride Energy Foam in the Zig Geometry provides cushioning and energy return. Stabilizing upper layer of lightweight EVA in rear of the shoe and along medial side. Feature 2: High reflectivity and breathability within vamp, within a highly comfortable upper. Feature 3: Energy banded outsole specifically designed to enhance responsiveness while elevating traction.