AV3046 001 Vast Grey/Mtlc Platinum/Atmosphere Grey/Gunsmoke | Metallic Clash Pack Engineered mesh and parial bootie for a supportive, comfortable fit. Flywire cables lock down your foot. Forefoot flex zone for natural movement. Heel collar adds comfort around Achilles area. Full-length Zoom Air unit for a smooth, responsive ride. Cushlon midsole adds extra comfort. Small cut-outs in rubber allow flexibility while delivering traction.