Uniforms commonly worn by students of various grades depending on the country; in Japan, they're mostly worn by middle school and high school students. The two most common designs are serafuku and blazer. Common accessories can include: sweater, cardigan, sweater vest, thighhighs, kneehighs. A gakuran is a popular uniform worn by boys. A common footwear for both genders while in school is the uwabaki.