GIFTPOCKET Women's Cotton Summer Sleeveless Maternity & Nursing Tank Top Vest This is in Chinese sizing, we kindly suggest that you choose one size larger. SIZE(appr)M: bust30.7"-37.8", hem34.6"-41.7", length22.8". L : bust32.3"-40.2", hem36.2"-44.1", length23.2". XL: bust33.9"-41.7", hem37.8"-46.5", length23.6". XXL: bust34.6"-44.1", hem39.4"-48", length24". Material: 95% cotton + 5% spandex. It is suitable for indoor wearing as well as outdoor wearing. Double front layers, you only need to lift up the front layer for breastfeeding.