Helmet Suggestion / Rain proof?

Hello folks, does anyone have any experience with this helmet? I wanted to know whether it's rain proof or not. I heard that it's a rebrand of steel bird sbh 25 which people say that it's not rainproof as the water leakage through the vents are very prominent.

I have a very specific head and body proportion ratio that's why after lot research I could find only this helmet that fits my body. And also due to the budget.

Tldr - is it rainproof?