Details: Upper: 100% calfskin leather Inner lining: 75% pig skin and 25% textile Sole: 100% synthetic Removable insole Type of close: Laces Thickness of the sole 3.5 cm (1.38”) Extra Comfort You won’t be able to resist the Pikolinos York for men. They’ll keep you 100% comfortable all day long. An elegant touch for casual footwear made of sustainable materials and with a removable insole that will make every step full of comfort. No doubt, they are the essence of comfort.