Delivered as advertised.I got these for use with my CO2 Laser Engraver. I chose these specifically because a fair amount of people said they were small/too small/perfect for their small head, and I have a head that is on the smaller size. LOL these are HUGE on me and the strap isn't really adjustable. I tied a knot in the tie that came undone, but I prop it on top of my ponytail. When open they slide easily over my ears on both sides but give decent eye coverage. They seem to fit my husband and 15 year old son great, though. I won't be returning them as they seem good quality and the price was fair.I like using them because I like to safely watch what my laser is doing.They apparently work. I put them between my CO2 laser lens and the work piece and it stopped engraving, so I feel that these will be perfectly adequate protection for my eyes!They work greatafter a few months of leaving it in a hard protective case, I noticed the plastic came apart and the lenses will not stay in. very cheaply made and wont last long.Exactly what I needed and got here quick!The glasses I received are nothing like the glasses in the photo. What I received were a pair of protective goggles with an insert that looks like a pair of child’s sunglasses. Maybe they work as advertised, but they definitely aren’t the product that was advertised.Bought for a CO2 laser. One of my favourite things in life is seeing so I was worried about losing this ability. I can confirm that my eyes are still able to see just as badly as they did before using them.Side protection is good and the lens only ends right at the very end of my peripheral vision without glasses. I do not think these would be adequate with glasses underneath as they need to sit close to your face.It would be nice to scientifically test the protection rating but will have to rate based on experience of still having eyeballs that work.Vor etwas mehr als 3 Monaten gekauft. Da ich selber Brillenträger bin, kommt die Schutzbrille nur selten zum Einsatz (nur beim Öffnen im laufenden Betrieb meines Lasers). Also 4x benutzt und der Rahmen ist bereits gerissen und zwar vom normalen Aufsetzen und so einen Eierkopf hab ich nun auch nicht. 36,- € für so einen Müll zu verlangen ist eine Frechheit. Vielleicht ein Montagsmodell aber die Reklamation über Amazon ist nicht mehr möglich. Finger weg, es gibt sicherlich besseres als MCWlaser.Hi, just got myself a K40 laser cutter, so thought I better get myself some protection for my eyes.As I wear glasses finding a pair of laser protection glasses get difficult.But I found this pair, seemed ok also included a photo with someone wearing it with his prescription glasses on aswell .The information of these glasses tell me these are made conforming to the right "standards".... Well lets hope so :-)Delivery was pretty quick, and the packaging was good.The glasses come in a really good hard/soft case made from fake leather and I really like this case!These classes also come with a cleaning cloth and lanyard to hang it around your neck, all very good.The glasses themselves fit on my medium sized head pretty well and that is with me wearing my prescription glasses.The laser protection glasses feel very cheap, and is pretty much completely made from plastic.I hoped for the $50 I paid I got something that was made a little better.But its ok, I am happy to have found a pair that fits "ok" while wearing my other glasses.Its not like I am wearing these al day long.Damit ich auch lange Freude an meinen CO2 Laser habe brauchte ich eine Sicherheitsbrille.Entschieden habe ich mich für diese, weil dies auch auf eine bereits vorhandene Brille mit Sehstärke übergezogen werden kann.Die Sicherheitsbrille stört mich kaum, natürlich merke ich das ich zwei Brillen aufhabe aber dies ist es mir wert. Die Brillenbügel können in der Länge eingestellt werden.Wenn ich die Sicherheitsbrille nicht benötige kann ich diese in den mitgelieferten Case verstauen .Nach vielen Jahren als Kunde bei Amazon ist dies nun meine erste Rezension.Diese schreibe ich lediglich, weil der chinesische Lieferant meine Rückgabe hintergfragt hat.Zur Co2 Schutzbrille Style 5:Die bestellte Co2 Laserschutzbrille mag ja ihren Zweck erfüllen,allerdings ist das Brillengestell derart schmal, dass die Brillenbügel sich schon beim aufsetzendeutlich verformen und sehr unangenehm am Kopf drücken.Für den durchschnittlichen europäischen Männerkopf nicht zu gebrauchen, eher für Kinder und Heranwachsende