Madewell Supima® Cotton Essential Long-Sleeve Tee in Zetta Stripe XS Superfine and luxe, Supima® cotton has extra-long fibers that make the fabric smoother, softer and stronger. A fresh take on a best seller, this striped tee has a high crewneck and long sleeves with a bit of bubble. Worn a few times and it's super comfy but it's just not a color I typically reach for.