this review title is: had to make adjustments but works good now and the content is: these are great but they do fog up badly i threw a little dishwashing soap on them and now they work perfect no fogging up i like that you can see threw them and i breathe easier in this then a mask there is no point to the vent hole though it doesn t work or have any function or purpose.there are other information for this review, one is this reviewer did purchase it and the other is 1 people think this review is helpful.