Washing a Loen Poan Star Top requires cold water and no direct sunlight during drying—otherwise, the thermochromic "memory" can be permanently set to the "on" position, leaving the stars visible even at night.
When combined, most likely describes a bright, Korean-inspired, patterned top featuring celestial (star) motifs, made from a unique fabric called "Poan," designed to be worn during sunny weather or under the astrological sign of a sun-dominant star. sunny loen poan star top