if purchasing SG-1 goggles, recognize major problem with fogging. I tried 3 different de-fogging products w/o success. I used them hunting in the snow and while the lens were great, the fogging was miserable experience. I will be trying the special defog lenses next.
In short, if you plan on using these goggles for winter events with activity, do not purchase regular lens!
Pros: straight forward set up
Cons: fogging makes them worthless
This review was written in the old system and had content requirements that are different than reviews written today.