The Calafat features: Upper: 100% calfskin leather Inner lining: 25% other materials and 75% textile Sole: 100% synthetic Cushioned insole Zipper closure Heel height 5,5 cm (2.2"") Shaft contour 25 cm (9.8"") (size 37 eur/4 uk/6,5 Total shaft height 11,3 cm (4.4"") (size 37 eur/4 uk/6,5