batting with scrim is the same as warm & natural-
it is a batt that is held together with a fabric/fiber in the middle that the batting is punched through- making it a very stable batt-which can be quilted up to 10" apart- batts without scrim usually need to be quilted every 2"-4" apart because areas larger than that allows the batt to pull apart and ball up in the quilt- batts with scrim do not pull apart and ball up when laundered.
it is great for machine quilting- can be difficult to hand quilt.