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.