Upper: Cowhide Linning: Cowhide Outsole: Vibram Insole: Ortholite Josepht Derby Cosimo The Cosimo model is thick and doesn't get wrinkled easilyBoth the upper part and the inner skin are made of cowhide which offers a comfortable fit and excellent durability.You can also feel the perfection of appearance.A genuine Vibram outsole is used that is provided by Vibram Korea.Thus, it has great durability and antislip function.A round shape goes well with casual outfits.Size Guide: we recommend orderin Black Dress Shoes With Leather Sole For Spring, Black Lace-up Shoes With Contrast Sole For Work, Black Dress Shoes With Rubber Sole For Work, Sleek Black Oxfords With Rubber Sole, Black Dress Shoes With Textured Sole For Work, Black Flat Heel Dress Shoes For Derby, Black Oxfords With Contrast Sole For Work, Black Oxfords With Stitched Sole For Spring, Black Oxfords With Stitched Sole