Leatherworker (1, INT):

This proficiency allows a character to tan and treat leather, and to make clothing and other leather objects.
The character can make leather armor, as well as backpacks, saddlebags, saddles, and all sorts of harnesses.

Leatherworker, Equipment: The tools of the leatherworker include punches, needles, knives, scissors, and oils for treating the leather.
Cost: 300 gp (The cost of raw materials is 11-20%(1d10 + 10)of the value of the finished work.)
Space: 15' x 15'