The Sek-sē Performance Collection. Our new line of performance aims to combine sexy and sportswear into one luxurious feel of comfort and activity. Our classic logo and the line name 'performance' precisely measured to fall in the middle of our name is printed in the middle of this extremely comfortable tank top. This classic tank top is made with a luxurious blend of cotton and polyester, a curved hem, self-fabric binding creating an elegant feel to your body.