The Z-Supply Sirena Rib Tank is built on the brand's premium feather rib fabric — a midweight cotton-spandex blend with a soft, textured hand feel and a fitted silhouette. The scoop neckline and wide, bra-friendly straps make it as practical as it is versatile. Layer it under a blazer or denim jacket, or wear it solo with high-waisted denim for a sleek, effortless everyday outfit.