The Women's Siren Long Sleeve Sweetheart is made with Icebreaker's corespun fabric, making this a soft and stretchy women's tee with an updated fit and fabric that makes it even more comfortable. Corespun uses nylon fibers wrapped in Merino wool for added strength and durability that retains next-to-skin softness. Ideal for year-round use whether traveling, hiking, or relaxing after a big day outside, the Siren Long Sleeve Sweetheart also features a flattering neckline and a fit that's perfect for everyday comfort and layering.
Nature created Icebreaker merino wool as protection against the scorching summers and freezing winters of New Zealand’s rugged Southern Alps mountain range. The merino is one of the world’s most ancient and toughest breeds of sheep.
Icebreaker has pioneered the use of merino wool in the wilderness since 1994, and have now fused nature and technology to create merino layers for the outdoors, for performance sports, and for the city. Icebreaker merino garments are soft and non-itch, warm in the cold and cool in the heat, they breathe to prevent clamminess, and have a miraculous ability to warn off stinkiness.