Mio Akiyama pauses before her solo to give you a quizzical look. This heather-gray sweatshirt jacket is 90-percent cotton and 10-percent polyester; it zips up the front, has handwarmer pockets in front, and a hood with a drawstring. Length (shoulder to hem): 738cm. Width (measured flat, under the arms, one side only): 54cm. Go ahead, Mio, rock out!