What do you mean about this goggles?

I want do build a laser engraver with a 405nm laser. At first i do experiment with 100mW. Later if i have enough experience i wil use a 300-500mW laser.

Now i am looking for a cheap but good laser protection goggle. I have found this one: Laserschutzbrille 200 - 540 ***mit Etui*** | eBay
Anyone knows this goggle? is this good for my project up to 500mW? or can anyone recommend other good and cheap goggles?

thanks for help.
gr€€ts