If you are an RC model aircraft flyer you will know that you need a decent pair of wraparound sunglasses to protect your eyes in different weather conditions.
On sunny days, you need sunglasses with polarised lenses to protect your eyes from the sun's glare when you are looking up at your plane in the sky.
On windy days, you need glasses that are effective at blocking out as much wind as possible, especially if it is a cold wind that makes your eyes water.
On overcast days, you need glasses that will enhance contrast so that you can see your plane as clearly as possible.
The ideal solution for model aircraft enthusiasts is a pair of wraparound sunglasses with a protective gasket.
7eye AirShield glasses have been recommended in RC model flying forums because not only do they keep out the wind and stop your eyes from watering on cold windy days, but they also block much more peripheral glare than standard wraparound sunglasses.
They are supplied with a range of lenses, including light-reactive and polarised lenses, and lens colours such as copper that are useful for increasing contrast on dull days.