The Icebreaker Women's Siren LS Sweetheart Top is a women's baselayer top that has corespun fabric for enhanced durability. The sleek design makes it good for everyday use and layering with other pieces we sell on Moosejaw. The sweetheart neckline adds an additional touch of femininity (and makes for better tan lines in our opinion). Features of the Icebreaker Women's Siren Long Sleeve Sweetheart Top Updated with improved Fit plus corespun fabric for enhanced durability Sleek design for everyday comfort and layering Feminine sweetheart neckline Icebreaker tonal screenprint logo