Oasis Women's Chrissie Lace-Up Shoes Trek-Dry vamp lining has natural antimicrobial properties for a healthy foot environment. Natural Skintex lining treatment helps keep skin feeling soft and smooth. Oasis Grasp outsole offers durable, lightweight slip resistance and shock absorption. Full-grain leather upper, Trek Dry upper lining, EVA insole, ethylene propylene rubber midsole... Ethylene propylene rubber outsole, etc. Care: Spot clean upper with a damp cloth.