Shetland wool is best looked after by hand washing as below. When new it is quite normal for pilling to occur (the formation of small balls). These will general remove themselves with washing, although they can also be combed off.
Hand wash instructions :
Use lukewarm water (30`C) and a gentle soap or baby shampoo.
Squeeze the soap through the garment. Rubbing will cause pilling (small balls) and may cause shrinkage. Rinse the garment thoroughly in cool clean water. Remove water by gentle squeezing or a light spin in a spin dryer.
Dry flat and smooth the garment back into shape.
When dry, iron lightly with a cool iron (two dots).
DO NOT TUMBLE DRY.