There is no problem with respect to scratches and transparency. Since it is not a sliding type stretchable temple, it can not be adjusted by the size of the head. I think that it would be fine if you can adjust the size as it will fall down.
In an environment where scattered materials are likely to fly, additionally when moving light and dark areas, all the time during work.
On 2010-10-23 01:42:45
Though it may be hard to read because it is the first time to write a review, thank you. I have been using this product for a considerable period of time. ○ We are using almost everything in our work, such as the environment in which the facets of the lathe, the slice, the welding work and the like flutter, the work drawn under the vehicle, etc. ○ The lens surface is very robust without causing stains on the lens and peeling of the curing process even if it is washed with an alkaline detergent. ○ There is a change in color in the lens of yellow, but it alleviates the burden on the eyes when moving to a dark place and a bright place. ○ A slight distortion of the image occurs around the edge of the lens, but the lens surface is wider than the cheap one, so it is not bothersome during work. ○ There is a spare in the item bag for a naughty nose pad that is easy to remove, and I feel the mind of the maker. Although it may be a bit expensive, I would like to continue to buy this product from now on. Recently price is a trend like everything, but I think that good products will remain for a long time.