Pig leather and mesh upper, 100% recycled laces and straps. Bellows tongue keeps dirt out. Protective toe cap, 100% recycled mesh lining. Kinetic Fit Advanced removable contoured insole with reinforced heel cushion for medium support. Merrell Air cushion shaped nylon shaft in the heel absorbs stress and provides stability. Lightweight EVA foam midsole for stability and comfort. Vibram TC5+ rubber sole For over a decade, the Merrell Moab has been the choice of hikers when a choice needs to be made, making it the bestselling hiker in the world.