Sweet Mommy Maternity and Nursing Cotton Mock Turtleneck Top Fabric information: 95%COTTON!!!, 5%Polyurethane Affordable and Comfortable Maternity and Nursing Cotton Turtleneck Top. US Sizes ratio M 2-4, L 4-6. BUST Measurements: SIZE M: around 31.5-36.5 inch/80-92 cm. SIZE L: around 33-38 inch/ 84-96 cm. Covers your growing belly all the way down. Helps you to nurse easily. Turtle neck collar looks classic and chic.