Women's Merino 150 Siren Bra

$37.2 ~~$60~~ In stock

Our best-selling bra with a comfortable and lightly supportive fit, the Siren Bra features our 150gm jersey corespun fabric, which uses merino wool fibers wrapped around a nylon core for added strength and durability, while retaining next-to-skin softness. We've added a touch of LYCRA® for active stretch. The Siren’s sleek design and no-side-seam construction is perfect for everyday comfort and easy layering, while its thin adjustable elastic straps make for a barely-there feel.

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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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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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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 (5.0 / 5 · 5 reviews)

Aurora W. ★★★★★ Oct 22, 2026

I like that the nylon core makes the merino feel durable without losing softness—the fabric stays smooth even with daily wear. The straps don't dig in, which is a relief for all-day use.

Ruby ★★★★★ Oct 21, 2026

The 150gm fabric feels much more substantial than I expected for a lightweight bra, and it holds its shape beautifully after a few washes. My only small wish is that the back band came in a slightly wider size option, but the comfort still wins me over.

Leo ★★★★★ Oct 20, 2026

I was a little nervous about the nylon core making it feel stiff, but the merino touch is all that hits my skin—so comfortable for yoga and everyday wear. The 150gm weight is just right for layering without feeling bulky.