At first glance, the Women's Siren Racerback might just look like a fabulously casual tank, worn under a flannel or with a pair of faded jeans. But once you pull it on, you'll realize it's completely unique. Our ribbed, 180gm pure merino is softer and more breathable than any tank you've tried before. The deep v neckline and racerback are both feminine and incredibly easy to move in, and because it's merino, you can wear it day after day. So bring a few of those flannels, you'll probably need just this one tank.