Product Code: J77BORJ02 - PEL0J020 BACKPACK BAG Calfskin leather backpack bag. The calfskin boasts a fine grain that is exceptionally soft and velvety to the touch. The distinctive wrinkles of whole hides emerge through multiple stages of chrome tanning and several rounds in the barrel. Aniline dyes are used during the dyeing process to maintain a completely natural appearance, preserving the grain before any refinements, concluding with the application of a water-resistant finish to the leather.