Naturally dyed with fustic. 100% Charmeuse silk.Hand wash in cool water. Hang to dry. One of a kind. Each piece has unique markings and may vary slightly in color. Made to order. Each piece is made and dyed to order and can take up to 6 weeks, but we always try our best to make it sooner. Measurements:Hips 28 (XS) 29 (S) 30 (M) 31 (L)Center Back 27 (XS) 28 (S) 29 (M) 30 (L)Sleeve Length (from center back) 26 (XS) 26 1/2 (S) 27 (M) 27 ½ (L)Sleeve Opening (flat) 4 1/2 (XS) 5 (S) 5 1/2 (M) 6 (L)Chest (1" below arm hole-flat) 21 (XS) 22 (S) 23 (M) 24 (L)Sweep/Hem (flat) 19 (XS) 20 (S) 21 (M) 22 (L)Arm Hole (flat) 8 (XS) 8 1/2 (S) 9 (M) 9 ½ (L)