Abstract: Glasses having a frame for lenses and foldable side arms hinged at one end thereof to the frame. At least one side arm carries a body having an elongated conformation with a first upper portion, at a distance from the side arm, widened with respect to a second lower portion and integral with the side arm, in proximity to an end, of such first portion a seat for an elastic annular element. This elastic annular element suitable to associate with the second portion of the body carried by the side arm in a first work position, but suitable to be arranged partially outside the seat in a second work position but always associated with the side arm. In such second position the annular element being connectable to a button of a garment or a similar element to enable fastening the glasses to this when the glasses are not worn.