A temperature resistant vitreous inorganic fiber having a use temperature of up to at least 1000\xb0 C. , at a pressure in the range of ambient to 150 psi and collecting the products at a temperature ranging between 5 to 5 C. The female end has an internal surface with a second engagement groove, and an aperture extending from an outer surface of the tubular body to the second engagement groove. This accessory holds a shirt cuff in a desired position on the forearm and also provides a fashionable appearance. In use, the unit is situated so as to place a transmitreceive antenna close to or in the line of motion of the object.