Icebug Women's Kayi BUGrip Studded Traction Running Shoe 100% Synthetic Imported Synthetic sole Upper: RipStop Nylon / MicroSuede Lining: QuickDry mesh Insock: Ortholite, removable Midsole: Lightweight EVA with ESS stabilizer Outsole: Rubber with BUGrip 19 carbide tip studs