The Nike Vapor Ultrafly 3 Keystone adds comfort and durability with synthetic leather and foam for responsive cushioning. A solid rubber sole provides durability on the basepaths. Nike Fastflex outsole enhances articulation and lets you move freely. Molded synthetic leather provides support and durability. Foam provides soft, comfortable cushioning. Mesh tongue adds ventilation to keep your foot cool. 8 full-length cleats in the forefoot and 4 cleats in the heel deliver powerful traction while helping reduce hot spots.