Dear all helpful folks,
My sister lives in Singapore and they are all "out of stock" ... her baby 3years old is coughing badly

Can anyone advise where to get face mask in Hong Kong for a CHILD less than 5 years?
I will get and courier to her

a) Totobobo (pic from their website, but they have no stock in Singapore
b) 3m N95

Many many thanks !
Life