Self: 97% polyester 3% elastane Lining: 92% polyester 8% elastane. Made in China. Dry clean only. Fully lined. Pull-on styling with loop button closure. Sequins all over. TSEI-WD161. TS9230. Founded in 2020, THE SEI is a ready-to-wear collection based in Los Angeles, California that is fully women and minority owned. The brand aims to build a foundation of polished classics mixed with seductive structured and feminine silhouettes to empower women to feel confidence and joy, while remaining effortless and timeless.