Abstract
This research was conducted to understand the different circumstances for wearing shirts by adult males aged 20-39, and to provide this basic information to the shirt industry prior to developing new functional men's shirts. A total of 345 respondents participated in the survey. Most of questionnaire, frequency, mean and standard deviation were calculated and the differences between the 20s and 30s were analyzed by t-test or ${\chi}^2$ test. The results of the survey are as follows. Grading the satisfaction degree of their body parts, the respondents were relatively unsatisfied with their height, weight, and waist, abdominal and hip circumferences. Majority preferred department stores, discount stores and outlets for purchasing shirts. Many have never owned tailored shirts - men in 20's had less experience with tailoring than men in 30's. The foremost selection criterion for purchasing shirts was fit -during purchase, men in their 20's considered fit more important than men in their 30's. The most preferred unbuttoning of the top button when wearing shirts. For favored collar shapes with one button unbuttoned, the most valued collar angle and style was V-neck shape when unbuttoned, low collar band, collar with unopened collar, and stiff collars. Most shirt designs and details included slim fit, no dart in the front and one dart on the back. Men in 20's more preferred the no dart in the front and one tuck on the back, as compared to men in 30's. On the other hand, men in their 30's preferred one dart shirts than men in 20's. Regarding shirt bands and cuffs, one button and regular collar and one button cuffs with round angle design, were the most preferred, respectively.