It's a very good pair of headphones. Weightless, comfortable and kinda worth for first home studio choice. Meanwhile, as a backup pair, taking the seat of my favourite DT 770, it's good. Its good for its price.
Also i was thinking if this is a quality pair of headphones for a home studio. Yeah ok it is. When I first unboxed it, I saw and felt the low quality plastic materials, but, once again, for its price it's good.
Now the sound. Ok they have kinda lovely sound, flat, but not almost flat. Something like when you adjust the volume of the audio interface starts a beat peaking before the peak level. Is the reason for that the ohms? - I don't think so.
The type of the product, I'm 100% sure is not closed.
Volume knob 30% - everyone in my room can hear what I hear.
Volume knob 50% - everyone in the next two rooms can hear what I hear.
If move them upon my head, lay them on the desk, move from room to my hall, I still hear them. So I think this item it's worth to start from a cheap pair of headphones, but not as described.