The unisex running shoes in oyster feature synthetic and mesh upper, protective and abrasion resistant rubber heel and toe cap, a neoprene lining,100% recycled mesh footbed cover, Cleansport NXT™ treated for natural odor control, 30% recycled removable EVA foam footbed, FloatPro™ Foam midsole for lightweight comfort that lasts, and a Vibram® Ecostep Recycle outsole designed with 30% recycled rubber which provides added durability and improved grip on wet and dry surfaces.