100% undyed virgin wool, in 100 g balls to use with no. 10-12 knitting needles, for a soft and warm effect. Garments created with Oslo wool should only be hand washed, in cold water with a specific delicate detergent and softener for virgin wool. They should not be spun dry, but squeezed lightly to remove excess water and should be dried flat. Ironing is possible by using a cotton cloth between the iron and the garment, to avoid wool burns or shine.