Columbia Women's Sun Chill Thong 100% Synthetic Rubber sole Non-Absorben upper, quick-drying snthetic nubuck with emossed detail; soft jersey knit lining Techlite injection molded material midsole with at contoured shape for comfort and cushioning Nylon shank for additional spport Molded non-marking Omni-Grip rubber compound outsole with molded siped tread pattern for traction control