Recycled PET plastic bungee cord and lace-lock system Aquagrip rubber with Aqua Stop zonal siping provides maximum traction on wet surfaces Stability shank delivers lightweight support Contoured arch for midfoot support Slip-on design for easy on and go Specs Upper contains recycled PET plastic bottles Non-marking rubber outsole leaves no trace EVA midsole for lightweight cushioning Quick-dry lining for active use EVA insole with arch support for all-day comfort