Sweet Mommy Maternity and Nursing Lace Layered Slit Back Bamboo Top Bamboo Rayon 95%, Polyurethane 5% [other fabric] Stripe: Cotton 100%, Lace: Nylon 65%, Cotton 35% Size(cm): M(Bust100,Hem48,Length60,Shoulder30,Cuff15,Belly-129), L(100,48,64,30,Cuff15,Belly-129) The length of Large (Tall) Size is 4cm longer than Medium. There is a slit on under layer near your airm pits to nurse your baby. Top layer will keep you covered while you nurse. A Note About Sizes: For a better fit, when you ordering SweetMommy's wear, we recommend that you select one size larger than usual.