Unique and transparent sneakers that change color depending on the socks you wear. This shoe is crafted with detailing in fish leather, calf leather and calf suede. All sneakers feature FIFTY: the backing material of the sneaker consists of at least 50% recycled polyester from PET bottles. Removeable insole in naturally shock-absorbing cork, with ultra-soft PU base and air holes to ensure good ventilation inside the shoe. An outsole of natural rubber combined with ordinary rubber and at least 10% recycled rubber provides the ultimate comfort.