Icebreaker Siren L/S Sweetheart Long Sleeve Top - Black, XS

Experience the ultimate in natural performance with the Icebreaker Siren L/S Sweetheart Long Sleeve Top. Crafted from a premium blend of 83% Merino Wool, 12% Nylon, and 5% Lycra®, this top offers exceptional softness, breathability, and temperature regulation for all-season comfort. The sweetheart neckline and slim fit create a flattering silhouette, while corespun technology enhances durability. Ideal as a base layer for active pursuits or as everyday wear, this top is a versatile addition to any wardrobe.

Advantages

Merino wool naturally resists odors, keeping you fresh even after extended wear. The lightweight 150 g/m² fabric provides excellent breathability and moisture management, while flatlock seams prevent chafing. The drop tail hem adds extra coverage, and ZQ-certified merino ensures ethical and sustainable sourcing.

Suitable for

• Base layer for hiking, running, and outdoor activities
• Everyday casual wear
• Travel and activewear
• All-season layering

Key specifications

• Material: 83% Merino Wool, 12% Nylon, 5% Lycra®
• Fabric weight: 150 g/m² (Lightweight)
• Fit: Slim
• Neckline: Sweetheart
• Sleeve length: Long Sleeve
• Color: Black
• Size: XS
• Care: Machine wash cold, line dry in shade, do not tumble dry

Recommendations

For best results, pair with other Icebreaker merino layers. Avoid fabric softeners to maintain moisture-wicking properties.