UPPER: Ultra-soft lightweight Ronnie leather for exceptional comfort and control. Ronnie is a very soft and supple calf skin leather. Nike engineered rubberized coating on the vamp gives shoe durability. High-performance molded sock liner for great comfort. OUTSOLE: Lightweight TPU with multi-directional forefoot flexibility and conical/blade stud design for use on firm, natural surfaces. WEIGHT: (10.2 oz.)