These Merrell Men's Kahuna III Sandals feature both an air cushion in the midsole for optimum comfort and a Vibram sole unit which ensures maximum stability and durability on uneven and testing surfaces. Features: Antimicrobial Lycra neoprene lining for excellent protection. Air cushion in the midsole provides excellent cushioning and comfort. Vibram sole unit ensures maximum stability and durability. Pig suede upper provides superb flexibility.