Material:Top layer Cowhide leather (durable and luxury genuine leather) Crossbody Sling Bag Messenger Man Purse Handbags for Mens Zipper Shoulder Bag for Work Business suitable for business work ,daily life ,travel ,it is nice gift for male friends. Size:29x11x21cm / 11.42"x4.33"x8.27" ( Meduim Size : You can refrence A4 paper size is 29.7x21cm ) Stucture: 1x main zipper pocket+ 1 vice-zipper pocket on top .1x zipper pocket on back outside ,1x flap pocket on back outside.