To apply OPTICAL CLIP on your Spectro and Demos sunglasses, simply:
Place OPTICAL CLIP inside the glasses in correspondence with the special joint placed above the adjustable plates
Apply light pressure from above on the central part of the clip until you hear a click.
Carefully check that OPTICAL CLIP is fixed and in a central position with respect to the glasses.
**Optical Clip for sports use and with sun lenses only. Ophthalmic lenses not included.