Oasis Women's Alana Lace-Up Oxford Shoes Leather Trek-Dry lining has natural antimicrobial properties that help maintain a healthy foot environment. Natural Skintex lining treatment helps keep skin feeling smooth and soft. Shock-absorbing Oasis Grasp rubber outsole resists slips for superior traction. Full-grain leather upper, Trek-Dry (forefoot) and pigskin leather (collar) upper lining... Polyester mesh sockliner, removable EVA insole with EVA spacer, rubber outsole, etc.