The ‘skin’ used for attaching tape or glue around the perimeter of a unit is called poly. It is normally applied by the factory when the unit is made (although it can be sewn in after the unit is made). There are also artifical skin units that are often just called ‘skin units.’ They are made entirely of thin poly material. The term fabric normally applies to lace material. It sometimes includes fine mono (yesterday’s technology--it’s very stiff and screen-like). Hope this helps.
Regards,
John