Womens Lucky Penny Vest L - Emerald/Blue Topaz. Layering shouldn't be one dimensional and this lightweight vest adds insulation to your core - whether underneath an outer shell or on top of your base woolies. The Lucky Penny is insulated with Pinneco Coreâ¢, which is designed to be more breathable, thermally efficient and sustainably engineered than other insulation options. The fit is relaxed, with a stylish slanted-quilt design.