Vintage Ralph Lauren Wool Brown Houndstooth Sweater Vest Size S. Ralph Lauren's warm wool sweater vest has a button-down front, two non-functional but cute front pockets, a houndstooth design in contrasting brown colors in the front, and a thickly ribbed back. Vest is composed of 100% Lamb's Wool. Vest is in good vintage condition with a minor imperfection that's easy to sew, see photo.