A soft and stretchy women's T-shirt with an updated fit and fabric that makes it even more comfortable, the Siren Long Sleeve Sweetheart Arena is made with Icebreaker's 150gm jersey corespun fabric. Corespun uses merino wool fibers wrapped around a nylon core for added strength and durability, which retains next-to-skin softness. They've added a touch of LYCRA® to provide just enough stretch to withstand holding shape throughout your day. Icebreaker's Arena sheep print reminds us of Icebreaker's unique heritage, and the sheep that keep us cozy. Ideal for year-round use whether traveling, hiking, or relaxing after a big day outside, the Siren Long Sleeve Sweetheart also features a feminine neckline and a slim, flattering fit that's perfect for everyday comfort and layering.   Fabric: 150weight  83% Merino wool, 12% Nylon, 5% LYCRA            Benefits: Comfort, breathability, durability, odor resistance   Sleek design for everyday comfort and layering, corespun fabric for added durability