• Engineered mesh upper: Improves breathability
• External back heel counter: Helps keep the foot stable and provide a more comfortable stride
• 4D GUIDANCE SYSTEM feature: Helps create adaptive stability for a more balanced stride
• Rearfoot PureGEL technology: Helps provide lightweight cushioning and softer landings
• FF BLAST PLUS ECO cushioning is made with approximately 20% bio-based content and helps provide cloud-like comfort: OrthoLite X-55 sockliner