A sleeve for improving a swinging motion of a user wearing the sleeve includes a tubular portion and a primary member. The tubular portion has a first opening and a second opening. The tubular portion configured to directly engage an arm portion of the user, wherein the arm portion extends from the first opening to the second opening. The primary member is substantially adjacent a first opening of the tubular portion, wherein the primary member is removably attached or permanently attached to the sleeve. The thickness of the primary member is greater than a thickness of the tubular portion for providing feedback to the user when the primary member is in contact with a torso of the user.