H&M Puff-Sleeved Dress Black Floral Large New with Tags. Size: Large measures flat: armpit to armpit: 23" length: 36" Short dress in an airy, woven cotton fabric with a printed pattern. V-neck at front with sewn wrapover, ruffles at front and back, and 3/4-length puff sleeves with narrow elastic at cuffs. Gathered seam at waist and flared skirt. Lining in recycled polyester. Composition: Shell: Cotton 100%Lining: Polyester 100%