Fitville Rebound Core V1 Size 13EW Color: Black New in Box Extra Wide: Spacious toe box that protects sensitive toes; say goodbye to cramped feet. Rebound and Cushioning: Tailoring sole comfort with dual EVA densities - 58% degree for firmness of soles, 53% degree for flexibility of forefoot. Arch Support with Extra Bounce: Our U-shaped arch support insole, along with dual-density EVA and the EnergyWave pad, ensures optimal shock absorption. Top-Notch Slip Resistance: The rubber outsole is smartly designed to achieve superior ground gripping. Pronation and Flat Feet Control: Our heel ring ensures consistent gait posture, even when fatigue strikes.