Aritzia TnaBUTTE Bound Sports Tank in Burgandy color size medium. Only worn a couple times. 80% nylon, 20% elastane; Lining: 89% nylon, 11% elastane This is a scoop-neck tank with a built-in bra and light support. It’s made with TnaBUTTER™ — a barely there, buttery soft sweat-wicking fabric that shapes to your body.