Abstract: A sweater having windbreaking characteristics especially usable by active sportsmen such as golfers who must concentrate on their golf swing, is disclosed. The sweater is a relatively thin pullover type which has an outer layer and a layer adjacent the wearer's body of flexible, quiet, warm and soft material with a very thin windproofing layer sandwiched between the outer layer and body layer. Said windproofing layer is divided into five sections or parts: a torso and two lower arm sections which are loosely attached to the inner-facing surface of the outer layer and two upper arm sections loosely attached to the outer facing surface of the body layer in a manner that the windproofing layer does not make any noise, can be very thin because it is protected by the inner and outer layer, and does not restrict the freedom of movement of the wearer.