Seamless Nine Iron Ribbed Crop Top This ribbed, knitted-fabric crop top in classy, nine iron grey is flattering and functional. Whether you’re lifting weights, practicing your sun salutations, or simply getting some sun, this soft, stretchy, and styling top can handle it. Our Seamless activewear is the most comfy activewear we make, with no chaffing seams and a firm yet gentle fit, so you can look good and feel even better.