80% wool and 20% nylon
Sisu is a soft, durable utility yarn that is reinforced with nylon. It is therefore well suited for socks, but because it is so soft it has become a favorite for use under park suits and jackets. It has also been a cardigan favourite since the early 1980s as the structure of the yarn makes the cardigan pattern stand out well. Garments knitted in Sisu have a long life and can be equally beautiful for several generations.
The yarn is superwash-treated so that it can withstand frequent machine washing.
If washing in a machine, we recommend that all wool garments are washed separately on a wool program for the most gentle treatment. Spin well and dry the garment flat, preferably on top of a towel.