It��s this buttery smooth feeling that sets it apart from other luxury leathers. These shoes are designed to fit ergonomically. Premium comfort Oxford shoes. Laces - Polyester with round tip. Upper - Premium soft lambskin leather. Lining - Bovine leather, breathable and ultra soft. Insole - Ergonomic design, cushioned breathable leather with Fresh comfort technology. Outsole - Flexible Polyurethane reinforced with fine steel wires to maintain the shape but keeping it flexible. Made in Mexico.