reasons that make wool not suitable for an apron

Three reasons that make wool not suitable for an apron.

1. It is weak when wet and therefore cannot be soaked to remove stains
2. Can be easily damaged by chemicals and therefore stains cannot be removed using household bleaches
3. It is expensive and an apron need to be cheaper as it is a daily wear
4. It is damaged by rubbing and therefore friction methods cannot be used to remove fixed dirt
5. It is damaged by sudden changes in temperature and apron is exposed to such .