Works well for upholstery, pillows, duvet covers and slipcovers. It will not shrink if washed.
4/32" - 2.2 lbs. per spool, approximately 500 yards
5/32" - 3.3 lbs. per spool, approximately 500 yards
6/32" - 4.4 lbs. per spool, approximately 500 yards
Diameter size is different with polyester than cotton welt. Cotton smushes down to it's diameter. Since this is more firm, it does not change size when covered.
I much prefer this poly over cotton as it stays in my welt foot but is soft enough to go around pillow corners.
After MANY years of looking for a replacement for the old Conso cotton welt, I have finally had a manufacturer make polyester soft welt to match the old Conso cotton. It is sold as "Soft Polyester Welt" below.