Reference article
Fire Duck Outfit
The Fire Duck Outfit combines Fire Duck Mask and Fire Duck into a complete look in 
Duck Life: Space.
Getting the outfit
Buy 
Fire Duck Mask and 
Fire Duck at 
Pyro Shop for 50 
Coins each. Equip both pieces on the same duck through duck selection.
Wearing the outfit
The hat covers the head, and the costume covers the body. Wear them together for the full outfit, or mix either piece with other clothing. Clothing does not improve racing skills.