Junk, get the 3M clear and wear proper goggles under.
Super thin, maybe 3/8-thick easily deforms from radiant heat of a #1 victor welding head. Horribly off-centre bend doesn't match curve of helmet.
ConsDoes NOT fit standard 3M helmets, way too expensive for what you get. Around the $8-10 mark would make it worth-while, given the horrible quality.