Nectar of the gods grow medium #2..What is it?

I have a bag of medium from Nectar of the Gods labeled as #2. I can't find any information on it anywhere....

Before I open it, I want to double check its a coco medium and not a soil.

It's coco. I think #2 is 20% perlite. #4 is 33% And #8 is 50%

Awesome, that's what I was hoping. thanks for the fast response. I appreciate it.