it's a t-shirt which h can wear in ur home ... it's for daily use purpose. it has just some normal defects like white patch on the black area.. which can be seen in the last picture on the left side... and just because of this small mark m selling it in Such a low price... hope u will like it according to price..
and honestly I don't know which fabric is this... this is of type which is used in sports t shirts... we can say synthetic hosiery..