The unisex running shoes in sea and oyster feature waterproof nubuck, hairy suede and mesh uppers, 78% recycled breathable mesh lining, 100% recycled mesh footbed cover , Cleansport NXT™ treated for natural odor control  50% recycled removable EVA foam footbed , Merrell Air Cushion in the heel absorbs shock and adds stability, Molded nylon arch shank, 10% recycled lightweight EVA foam midsole for stability and comfort, and Vibram® TC5 outsole provides exceptional traction for outdoor multi-sport activities, formulated exclusively for Merrell.