Merrell's Cushioned and Shock AbsorbentBarefoot strobel construction for increased flexibility and comfort. Synthetic leather and mesh upper for style and comfort. Breathable mesh lining treated with Aegis® antimicrobial solution resist odor. Integrated footbed provides cushioning and reduces foot fatigue. 0mm ball to heel drop keeps you connected to your terrain. Natural flex outsole is durable and shock absorbent.