An anorak or parka is a type of heavy jacket with a hood, often lined with fur or fake fur, so as to protect the face from a combination of freezing temperatures and wind. This kind of garment, originally made from caribou or seal was invented by the Caribou Inuit, Inuit (Eskimo) of the Arctic region, who needed clothing that would protect them from wind chill and wetness while hunting and kayaking. Certain types of Inuit anoraks have to be regularly coated with fish oil to keep their water resistance.
The words anorak and parka have possibly been used interchangeably, but they are somewhat different garments. Strictly speaking, an anorak is a waterproof, hooded, pull-over jacket without a front opening, and sometimes drawstrings at the waist and cuffs, and a parka is a knee-length cold-weather jacket or coat; typically stuffed with down or very warm synthetic fiber, and with a fur-lined hood.
Read more about Anorak: Etymology, Amauti, The Making of The Amauti, The Child's Placement in The Garment, Winter and Summer Clothing, Amauti As Style