Enza Costa Bold Sheath Tank in Black. Size M (also in L, S, XL, XS). 100% pima cotton. Made in USA. Machine wash. Scoop neck. Jersey fabric. ENZA-WS1072. ISL3538. Designed to transform everyday basics into luxury essentials, Enza Costa's unique brand of minimalist, modern clothing is crafted with featherweight blends of sumptuous supima cotton, cashmere and silk.