they're not jncos! they're from taiwanese designer angus chiang's music-inspired spring/summer 2020 collection: https://www.anguschiang.com/blogs/archive/spring-summer-2020
edit: "'Even though people donβt really use CDs anymore and everything is so digitalized, I think of them as a memento of a time when you could really connect with music and create memories that should never be forgotten,' the designer said after his spring 2020 show, which was a tribute to the humble CD-ROM" https://wwd.com/runway/spring-ready-to-wear-2020/paris/angus-chiang/review/ (also has more runway photos)
(via this insta post: https://www.instagram.com/anormanhouse/p/CwfeXe_S93p/?img_index=2)