its so light that you hardly know its there when you wear them. the frame is made of flexible plastic with rubber pads at the temple tip and nose bridge. the size is perfect for large heads. no painful pinch at the temple. i got the amber colored lens for driving. they add contrast while reducing haze and eye fatigue.

my only gripe is the lens came with a few scratches on the left side. they were small enough and well below the horizon that i did not bother asking for a replacement.

UPDATE: i ordered one of every color except the orange revo and blue. they all have the same build quality and comfort. my favorite are the red, green and grey lens. the red lens is good for driving in overcast days. its not quite as dark or color saturated as the amber lens but still reduces haze. the green lens is just soothing to the eyes, perfect for indoor and low light situations. the grey lens is perfect for working in front of a computer monitor for prolonged periods. it reduces eye strain but does not affect or shift color.