AIRmesh Upper - Breathable upper allows air to flow in and out of the shoe. Dynamotion Fit - Provides a fit that moves the way you do, actively working with your foot throughout the gait cycle. Padded Tongue - Adds additional comfort and reduces the risks of irritation. Premium Insock - High-grade removable insock for premium comfort, cushioning and durability. Lacing System - Locks down the midfoot to reduce in shoe slippage.