Cotton Half Button Ribbed TankMO&Co. Women's Cotton Half Button Ribbed Tank A slim fit tank top cut from pure cotton fabric breathable, soft, and held it follows the body with a clean, unbroken line. The half button placket opens at the chest, a center back seam introduces subtle structure, running vertically to shape the fit without adding bulk. Features : Slim fit Half button placket Racerback, center back seam design Code: MBF2VET009 The back length of size S is 52. 5cm