40% lambs wool, 60% wool.

Note:

The gauge and needle sizes are estimates based on the ypp (yards per pound).

Information from Jager Farm Icelandics:
Lace Weight:
Almost a fingering weight, spun of approximately 40% lamb fleece, and the best of our premium adult fleeces. The lamb fiber gives it a wonderfully soft and downy feel, while the adult ensures strength to prevent breaks. Spun in the traditional single ply for softness, there are approximately 290 yards in a 2 oz. skein. Surprisingly versatile; whether knitted as a single for delicate lace scarves, or doubled or even tripled to add color and softness to your other knitting projects. Combines beautifully with other yarns to add color and a soft halo. This premium yarn presents a rare combination of fine weight, soft hand and surprising strength, making it a natural choice for weavers.