Great fit for a medium size head (hat size 7 1/8).  Lenses don't hit too low below the eye and don't come up onto or over your eyebrows.  Good snug fit keeps them in place.  Interchangeable lenses are excellent in different lighting conditions.

Dark: quite dark, filters out heavy sunlight but still doesn't make you lose the ball secondary to low light.

Brown: my favorites, makes everything stand out just perfectly in sunny or partly sunny conditions. Gets rid of glare without darkening your entire field of vision.

Yellow: brightens up everything around you.  have not used them on field, but they appear to do their job.

Also comes with carrying bag and lens cleaning cloth.

Only con is the storage of the other lenses.  They come prepackaged in individual plastic bags but there is not any way to store them without them rubbing together unless you keep them in their bags.