Alice & Elmer Women's Rayon 2 Pcs Stretch Strap Bandage Bodycon Evening Dress Material:90% Rayon, 9% Nylon, 1% Spandex Style:2 Pcs Stretch Strap,Washing instructions:hand wash in cold water . Can't use washing machine, Medium temperature to dry.(which can dry cleaning) Sizes:Extra Small(US2-4),Small(US4-6),Medium(US6-8),Large(US8-10) Set 2 pcs dress, Cross straps and backless at back. Please read the size chart in the left picture.Please note:The Generic Amazon Size Chart is not our size.