Today, people in fashion industries, pay attention to athleisure wear. Nowadays, a lot of young women wear fitted athleisure wear which gives comfort and provides slim looks of women. The survey was proceeded for Korean women in their 20∼40’s to find out the current phenomena. They are to find out the reason why, relation to exercise practice, lifestyle, favorite brands and etc. 43% of the 114 respondents said they wear athleisure wear in ordinary lives. 46.5% said they were non-wearers, however, it was found that they are. 10.5% were non-wearers. Most of them were wearing before and post to the exercise, and/or in leisure time or weekends. The most favorite items were leggings (66.67%), bra tops, tee shirts and jackets in order. The most favorable international brands were Adidas, Nike, and Lululemon. However, Korean brands were less recognizable. Non-wearers of athleisure said it is not proper to wear athleisure in everyday lives because it is improper. Good designs, brand names and right fit were the most important determinants in the decision to purchase.