ZEMgear O2 Oxygen Round Toe - All Sport Series (M5 - W6 , Black - Tulip Metallic) Fabric Round-toe pattern for wiggle room in the toe area and natural barefoot feel Green Grip recycled rubber pods Non-marking, non-slip outsole with water-dispersion channels Form-fitting 4-way stretch upper for multiple widths & foot shapes Patented high-frequency Tech Bands create lateral stability