This multi-functional versatile bag can be configured to allow it to be used in many different ways. The soft but sturdy top-handle allows the bag to be carried by hand while the long shoulder strap with two shoulder overlays allows the bag to be carried over the shoulder as a messenger bag or by simply changing the configuration of the strap, the bag can be used as backpack. Each of these configurations are as comfortable as the other. The BROWN and TAN Backpack is made from full-grain vegetable tanned leather with a waxy finish. The COGNAC bag is made of full grain PULL UP leather with a two tone effect The bag is constructed using heavy duty synthetic thread. All the materials used are heavy duty industrial grade to ensure this bag lasts a long time. This Leather Messenger / Backpack is unlined and has raw edges giving the bag a rugged finish. Information about the unique eco-friendly leather used in this bag This bag is made in Europe using the finest European hides. It is dyed using natural vegetable dyes and does not use any of the chemicals that the majority of leather being produced today does. Vegetable tanned leathers are becoming increasingly rare as companies switch from traditional methods of tanning leather using vegetable extracts to mass produced chrome tanned leathers. This leather satchel / briefcase will age very well and the more it is used, the better it will look. The leather has a very natural finish and does not have several coats of paint to hide any natural characteristics of the leather which is typical of cheaper leather bags. The leather used in this case shows any natural markings of the skin and this adds to the beauty and uniqueness of each bag.