Our fine elastics are a polyester covered spandex yarn, coming in 140D and 210D thicknesses.
The 140D is the classic fine elastic we have always stocked. 210D is a tiny bit thicker but still fine. We are buying these in while the production of 140D is on hold.
Both work well on 12gg Dubied or lower, can be knitted alone or plaited with other yarns to add stretch! Colours are the same.