I picked up two sets of glasses from X-loop. both were as described, however the vented pair were much smaller than the non vented, and there was no size indication on the order.

as to be expected, these are not Oakley's. the materials used are very thin, flimsy, and prone to breaking.  on this pair I have already lost one of the bridge support pads, and one of the lenses has popped out when cleaning.

However... they do what they are supposed to do: shade my eyes from the sun, and defog with a quickness. And they look good too.

at 4.99 a pair, i can buy as many as I want. well worth the money.