I am selling a knitted vest. It has a slim design, so it won't feel bulky when worn under a jacket. Also, even if you take off your jacket and are just wearing the vest and a shirt, it won't be baggy and will give a smart impression. In cold offices with excessive air conditioning, restaurants, concert halls, pachinko parlors, etc., if you carry this vest, you'll be able to avoid getting sick, not only in winter, but also in summer. Thank you.