FEATURES of the Helly Hansen Women's Aquapace Shoe Upper: Combination of synthetic and mesh for protection, comfort and breathability Helly Wear protection Breathable and quick-dry mesh Midsole: Premium EVA Outsole: Outsole Ultra Storm Grip Decoupled midsole, Flex zones for improved comfort/movement SPECIFICATIONS of the Helly Hansen Women's Aquapace Shoe Upper: Textile / Syn PU Outsole: Rubber