Are you tired of your glasses fogging up? This 3D printed gadget will prevent glasses from fogging up. It should work with most masks, both surgical and cloth. They are 3D printed in PLA plant based plastic. I have approximately 20 colours available and am selling these for $2 each. 3 for $5 I accept E-transfer or cash. Whatever you prefer Text or email please Model used under Creative Common Attribution license Model credit: https://www.thingiverse.com/thing:4635429