Reinforcements: Changing the Drape
Reinforcements are used to change the drape and handling of leather and provide support. Leather, as you may already know, can be as supple and thin as a piece of fabric, as rigid and stiff as a piece of wood, or something in between.

If the leather you choose has too much drape or is too pliable, then you can consider laminating (gluing) a reinforcement to the back of the leather to change its hand.