See this bag in my shop
I made this bag out of a black leather jacket and a pair of jeans trousers with paisley print.
Meassures:
W: about 43 cm (17 inches)
H: about 28 cm (11 inches)
D: about 9 cm (3.5 inch)
Straps are long enough (about 65 cm; 25.5 inches) to have it on a shoulder.