Icebreaker Siren Bikini Women's Gritstone Heather

The Icebreaker Siren Bikini is a lightweight, all-season base layer bottom designed for women who demand performance and comfort. Made from a blend of 83% Merino Wool, 12% Nylon, and 5% LYCRA®, this bikini offers natural odor resistance, breathability, and moisture wicking. The corespun fabric technology ensures durability and stretch, while offset seams prevent chafing. Ideal for hiking, running, skiing, or everyday wear, the Siren Bikini provides a slim fit and temperature regulation in any climate.

Advantages

Natural merino wool regulates body temperature, keeping you warm in cold and cool in warm conditions. The LYCRA® content provides excellent stretch and recovery for a comfortable fit. Odor resistance means you can wear it multiple days without washing. Offset seams reduce chafing and increase comfort during high-intensity activities.

Suitable for

• Hiking and backpacking
• Running and fitness
• Skiing and snowboarding
• Everyday casual wear
• Travel

Key specifications

• Material: 83% Merino Wool, 12% Nylon, 5% LYCRA®
• Fabric weight: 150 g/m² (Lightweight)
• Fit: Slim
• Seam construction: Offset seams to prevent chafing
• Care: Machine wash cold, line dry in shade. Do not tumble dry.
• Sustainability: ZQ-certified merino wool

Recommendations

For best performance, pair with Icebreaker Siren top or other merino base layers. Wash with similar colors and avoid fabric softeners.