Easy slip on style Upper is composed of recycled microfiber Decorative perforated laser cut pattern. Sewn upper to outsole with matching thread. Removable insole, 60% EVA, 40% pigskin. Textile upper with synthetic lining. Flexible plateau outsole 75% natural rubber, 25% recycled rubber European sizing, full sizes only. It is recommended to size up if you are a half size in US sizing.