From FibreMood:
For him, we have a plain vest with a mandarin collar. It's a lovely basic in cognac. The wrist trim and hem include elastic. The side pockets are incorporated in the dart.
Recommended fabrics
The Sean Bomber Jacket is a basic piece that can be made using various kinds of fabric: (coated) cotton, cotton twill, linen, wool, jeans, jacquard (fabric with woven motif), (faux) suede, etc.