This is a 30/70 blend of tussah silk and WGW superfine merino. It's a bulky 5-ply, due to the high loft of WGW fibre.
Weight: Sport / 5ply
Composition: 70% WGW superfine merino, 30% blend of tussah silk
Gauge: 24 stitches over 10cm in stockinette
Care: Hand wash, dry flat, medium iron, dry cleanable
Ravelry Link: https://www.ravelry.com/yarns/library/white-gum-wool-5-ply-silk-superfine-merino