This knitted volume fleece interlining is suitable for sleeveheads, it fills it and keeps it in shape. It can also be used for extra volume on your jacket front. As warmth fleece for coats you can also use it, it gives a little extra warmth.
Because this materual is knitted it's stretchy. It's also super soft and made from viscose with polyester.

Infosheet of this interlining: Watteline knitted volume fleece (dutch)

More supple and resembling Helsalet