Hollow wool fibers keep feet dry and comfortable in every season. * Sheepskin molds to the shape of your foot, creating a natural arch support. * Durable tread thermoplastic polyurethane sole ensures safety indoors and out. * Suede leather upper, sheepskin upper lining, sockliner and insole, thermoplastic polyurethane outsole. * Care: Lightly brush with a soft to medium brush.