Lululemon Run: Swiftly Racerback Size 6. Key features the racerback cut allows you to twist with ease doubles as a lightweight base layer for cool weather runs moisture wicking construction pulls sweat away from the body the tank's core construction is made of seamless Silverescent where there are seams they are flat and engineered to reduce chafing Tech specs designed for: run, yoga fabric(s): seamless Silverescent® properties: anti-stink, moisture wicking, preshrunk, chafe resistant, breathable shelf bra: no support level: not applicable coverage: medium fit: body-skimming length: below the hip