Medium Leather Back Pack - Soft Horse Full Grain Leather - RD03DESCRIPTION GUIDI Bag Collection. This backpack features an arched handle and a three dimensional form. The use of large leather for each part that is typical of GUIDI is also impressive. The main specification is a pocket with a zipper on the inside. The size is about the same as a regular backpack, and this bag has a lining. It has a three dimensional shape from the top to the bottom, but both sides and the bottom are sewn with a hard and thick