A 1)PE backsheet is made of PE material (water proof). It could be mat or shinny, touching like plastic material.Also it could be breathable. ( see pictures below).
2)Clothlike backsheet is made of non-woven fabric on the surface, and also with PE behind. It is soft touching, water proof, breathable, and not easily damaged.( see pictures below). But it is a little big expensive than PE backsheet.