Attachable IFR Shades for Spectacle Wearers

For IFR check rides pilots need shades to simulate IMC while flying in VMC. Spectacle bearers know about the problems of wearing them on top of their glasses. 

This model provides a simple solution, which can be easily attached to the spectacles. You hardly notice it when used.

Print in PETG for flexibility. Gray material is recommended. Black is too dark and white shines too much.