What is 'Tissue'???

[Clone 01]

Hi, my name is Niall

There might already be a thread about this but i can't find it so will someone please tell me what the hell does the item 'Tissue' do?

it's the item that you get as a constilation prize after you fight in the battle aren. what is it? there's also one or two other things that don't do anything but i can't remember what there called,does anyone rmember what there called and what they do?( i'm not exactly full of information am i!,lol)