UPPER/LINING
• Trail Running Spring Blast
• Pigskin leather upper
• Pigskin collar/tongue lining
• Aerodynamic Slipstream Fin

MIDSOLE/OUTSOLE
• 4.5mm Ortholite® Anatomical footbed treated with Aegis® antimicrobial technology
• Nylon 6.6 Injection Molded Arch Shank
• In-Board™ Compression Molded EVA Footframe
• Air Cushion® Midsole
• Merrell Sprint™ Sole/Sticky Rubber