Pilling is a natural phenomenon that occurs on wool and cashmere garments with the appearance of dots (pills) on blankets or throws. It is therefore not a low quality index of the yarn , as is often mistakenly thought, but it is nonetheless visually unpleasant.
Why does pilling occur?
Wool fibers and even more cashmere fibers are as precious as they are delicate.
The tendency to form small dots is natural, but is accentuated the softer and lighter the garment is.
The reason is simple: a garment obtained with more twisted yarns (therefore heavier and therefore more expensive) will have more closed and dense fibers which give little chance for the dots to pop out, while a garment obtained with slightly twisted yarns (therefore lighter, suitable for mid-season, softer and more swollen) will have a greater opportunity to develop pills.
This will inevitably happen for every fine wool and cashmere garment, but since it is possible to manage and control the pilling phenomenon, it is not on this that the choice of one's garment should be based