Kids face masks - your thoughts?

We're being encouraged to ask our children over 5 years old to wear a face mask when they're inside in crowded places. Good or bad? 

We as parents have taken the view that if wearing a kids face mask will reduce the chances of our children getting sick then that's an easy thing to do. 

We stock a range of children's face masks - suitable from about age 3 - 15 years. The Spring range masks in size small are awesome for age 8 upwards, the cute animal masks are suitable for the younger kids - approximately age 3 - 8.