What do u call this korean hat?

http://images.search.yahoo.com/images/view?back=http%3A%2F%2Fimages.search.yahoo.com%2Fsearch%2Fimages%3Fp%3Dkoreanbear%2Bhat%26ei%3Dutf-8%26y%3DSearch&w=333&h=500&imgurl=farm3.static.flickr.com%2F2384%2F2284288858_aee0203675.jpg&rurl=http%3A%2F%2Fwww.flickr.com%2Fphotos%2F24004025%40N06%2F2284288858%2F&size=133k&name=Korean+girl+with...&p=koreanbear+hat&oid=d307aa7dd710ccbc&fr2=&spell_query=korean+bear+hat&fusr=The+Green+Gi...&no=3&tt=35&sigr=11ldm1bi4&sigi=11mbmkdf4&sigb=12f2opnrj