Waterproof Nubuck, pig suede leather and mesh upper. Inside zipper for easy on and off. Waterproof construction will keep your feet dry. Comfortable and breathable mesh lining. M-Select FRESH for odor control. M-Select MOVE footframe, provides natural flex, contoured support, and increased cushioning. Merrell air cushion in the heel is shock absorbent, and increases stability. Merrell QForm® Comfort midsole for increased support. M-Select GRIP is featured in the outsole, providing shock absorbency and great traction.