The hides used for the bags are remains from tanneries all over europe.
Rejected by bigger retailers because of some scar or irregularity. Altough it is not common to think of leather as a durable material, I think durability is important and no leather, or any other material for that matter, should go to waste.
Treat the material well and you will see leather has the quality to get more beautiful the more it's used.
Most of the hides I use still contain the grain layer, original texture and markings that naturally occur in the animals life. I prefer using this leather with its imperfections and flaws still visible in my designs. It also is the best quality leather with the most strength and character.
I also re-use old garments such as old leather jackets.