This year's hit product "TWICE Hat", surprising truth. .

● Inventions where ears move when you press a handle

● Developers did not think that they will sell too much and did not file for expensive patents.

● TWICE favorite in the fan autographing session, and it is a big trend. 10,000 pieces can be sold. However, similar products are sold 130 thousand pieces a month, it is prosperous * cold Korea, now a necessity of girls. .