[SOLVED] What is this teabag-looking thing in my fuel tank?

I am a newbie to scooters so please be nice.

I just bought a Lexmoto Milano 125 EFI from my brother.
He bought it 2 years ago, but never used it and it was sat until 2 weeks ago when I decided to buy it and fix it up. It has 8 miles on it so I decided to fix the issues regarding the battery, the brakes need bleeding, etc.
It had a full tank of fuel, which I plan to dispose of since it is so old, but when i peered into it to see if there was much sediment, I noticed this white, cloth, teabag-looking thing in the bottom of the tank.



I have 2 questions.
1. What is it?
2. Is it left over from manufacture, or supposed to be there?
3. Do I need to remove it? Or do I leave it?

Thanks in advance all!

 

Hello Samuel and welcome to the forum.
That's a fuel filter sock. I should definitely leave it there if I was you

 

Thanks and thanks for the reply.
Interesting, so there are 2 stages of filtration? I knew about the inline one, but I had no clue there was one in the tank.
Thank you, I really appreciate it. Since this is my first vehicle, I want to be 100% on everything so I signed up to the forum to get advice from people with a little more knowledge than me.

 

That's basically correct, and you'll always get good advice here, even in these temporarily dark days

 

Looks quite similar but ya fuel level sensor looks like this with the float widgety thing attached.