Yeah .. it weighs about 5.5oz. and I was impressed that it did so well at keeping the wind off of my top parts.
Looks a lot like my HH SuperShelter Overcover, which weighs in at 4.8 oz. Overcovers/topcovers are nice, but in very cold weather I get quite a bit of frozen condensate. Is there a ventilation hole on this model? The hole on the HH SS overcover helps a lot, as it is positioned right over the head area.