IFR training Foggles are designed to limit the pilot’s field of vision, encouraging the pilot to fly with only the help of the flight instruments. The polycarbonate lenses are frosted to partially block the wearer’s field of vision. The open area is just large enough to allow the pilot in training to have a full view of the instrument panel. Foggles are light, comfortable, and easy to wear because they are designed like regular glasses.This IFR training Foggle (EDMO# 6161) is made of a clear polycarbonate plastic.