MATERIAL: S=US 4-6, M=US 8-10, L=US 12-14, XL=US 16-18, XXL=US 20; The Womens Romper Is Made Of Soft And Lightweight Material, Which Is Breathable And Airy. The Soft Lining Make Sure The Romper Won't See Through, Light-colored Underlayers Complement This Casual Rompers Beautifully