This fabric is made 'quilted'.  The 'stitching' is in fact a pattern in the kit of the fabric, and essentially it is like two pieces of polyester with loops in the centre to create the 'wadding'.  It may be that the whole thing is knitted on the loom all in one go!  the result is a warm, super soft fabric.  The diamond on the pattern are about 3cm x 2cm, so quite small.   Possible mark, so to be on the safe side we have reduced it!