Forever 21 Mock Neck Shift Dress. Black. Size Large. SHELL:100%RAYON LINING: 100%POLYESTER This Forever 21 cocktail dress has two layers, has a hook closure on the back of the neck, and a zipper on the back as well. Hits above the knee but not too short. It’s comfy and light. Perfect for any occasion. Dress it up with some black heels for a summer wedding, add some tights for a holiday event, or throw on some sandals for a casual day! Never worn. Perfect condition. No known flaws.