Best results for washing rain jackets and down items: Enclose your item in a pillow case and tie the end of the pillow case in a knot. Delicate wash cold water. Put pillow case and tumble dry. Dry clean or hand wash, line dry. On down product you might want to add a couple of tennis balls in the pillow case.
Size chart XS- 0-2 S- 2-4 M- 6-8 L- 10-12 XL- 12-14 DEPENDING ON bust size could go up one size.