The word "puffa" is a shortened version of "puffer" or "puffer jacket." It refers to a type of padded, quilted jacket usually filled with down or synthetic fibers to provide insulation and warmth.
WoodWood's A / W collection sees this eye catching puffa jacket take the centre stage. (theidleman.com)
So there I was, hot without neither a coat nor a scarf, while the locals wear puffa coats and woolly scarves as they stroll through town. (tallgirlsfashion.no)