An article of wearing apparel provided with a sensor for measuring a physiological signal, and a method for manufacturing the wearing apparel provided with a sensor. The wearing apparel includes a flexible substrate and the sensor includes at least one electrode, which has a signalling surface, and which faces in the same direction as the first surface of the flexible substrate. In addition, the sensor includes a signal transmission conductor, which is connected electrically to the electrode. The signal transmission conductor is attached in a watertight manner to the second surface of the substrate. The wearing apparel is comfortable to the user, and sensor in the wearing apparel is reliable, economical to manufacture, and waterproof.
