Women's Merino 150 Siren Bikini

Women's Merino 150 Siren Bikini - View 3

Women's Merino 150 Siren Bikini - View 4

Women's Merino 150 Siren Bikini - View 5

Women's Merino 150 Siren Bikini - View 6

$25.6 ~~$40~~ In stock

Soft and stretchy merino wool underwear with a modern slim fit, the Siren Bikini features our corespun fabric that’s incredibly soft and durable.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Chloe H. ★★★★★ Oct 22, 2026

The corespun fabric is noticeably softer against my skin than other wool underwear I've tried, and it keeps its shape after several washes. Perfect for both daily wear and active days.

Aurora A. ★★★★★ Oct 21, 2026

I’ve been wearing these for a few weeks now and the corespun fabric really holds its shape wash after wash. The merino is soft and doesn’t itch at all, and the modern slim fit stays put without digging in.

William I. ★★★★★ Oct 20, 2026

I was a little nervous about wool underwear being itchy, but this corespun fabric is incredibly soft against my skin—I forget I'm wearing it. The stretch is just right for a full day without bunching or riding up, and it's held up well after a few washes.