sen Tania Tank in Orange. - size 1/S (also in ) sen Tania Tank in Orange. - size 1/S (also in ) 95% micro modal 5% spandex. Dry clean only. Gathered side detail. SEN-WS161. TANIA. Delicate washed silks and fashion forward ingenuity are what make Sen elegantly simplistic. Focusing on classic and easy silhouettes with a modern sensibility, this Miami-based brand will integrate into your existing wardrobe with ease.