resilient and will spring back to its unfolded position and extend outwardly from the face shield the thicknesses of the layered lenses and folded tab portions illustrated in fig3 are highly exaggerated to clearly show the folding relationship in actual practice seven lenses and seven tab portions are stacked into the space between the end of the post and the outer surface of the face shield remember that there is no adhesive between the tab portions this allows the removal tab portions to fan out they do not stick to one another the present invention as shown in the figures has removal tab portions at both ends this allows a right handed or left handed person to easily remove the topmost layer it also allows the driver to pull the tab with either hand depending on the circumstances of the race it is to be understood that the present invention may include a laminated lens with only a left tab portion 25 or only a right tab portion 35 or both a left and a right tab portion the windshield embodiment 100 illustrated in fig7 and 8 will now be discussed in detail an optical stack of removable lenses for affixing to an optical window such as a racing car windshield is shown in fig8 the embodiment 100 has a plurality of e g seven generally rectangular superposed removable lenses 105 adhesively affixed to one another the outer perimeter is continuous each of the removable lenses 105 is held to each successive lens with a clear uninterrupted adhesive layer 110 interposed between each of the removable lenses preferably but optionally the perimeter has at least one generally straight edge portion 115 in the embodiment illustrated in fig8 the perimeter is rectangular and has four straight edge.