Fifteen Twenty Half Zip Shift Dress in Black. - size M (also in ) Fifteen Twenty Half Zip Shift Dress in Black. - size M (also in ) 100% poly. Dry clean only. Unlined. Zip front closure. FIFR-WD16. 3F17070. With a reputation for easy luxury and playful femininity, Fifteen Twenty offers a beautiful aesthetic with a slight edge. The brand is inspired by todays girl-on-the-go and each style is handcrafted to achieve that distinctly special, yet effortlessly easy look.