Fine elastic knitting yarn
Very fine knitting elastic, from Wakefield, Yorkshire where it was used in knitted socks. It is no longer available anywhere. For machine knitters - knit a few rows of your main yarn together with 1 strand of knitting elastic along the edge of your cuffs and welts. It's very handy if you don't have a double bed to knit your cuffs etc. After pressing, the elastic yarn contracts to produce a nice cling and fit. As it shrinks it also becomes almost invisible. The elastic goes a long way as you o