Enza Costa Essential Sleeveless U in White. Size M (also in L, S, XL, XS). 100% cotton. Made in USA. Machine wash. Scoop neckline. Lightweight jersey fabric. ENZA-WS970. ISL3340. 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.