Conversation so far:
What is the traditional garment of the Manchu people?
Wearing hats is a part of traditional Manchu culture.
What is the traditional hat for the manchu people made of?
Manchu hats are either formal or casual, formal hats being made in two different styles, straw for spring and summer, and fur for fall and winter.
Who makes the traditional garments for the manchu people?

Question: What occasion is the garment good for?
Self-contained rewrite: What occasion is the manchu people traditional  garment hat  good for?