Women's Merino 150 Siren Bra

$40.8 ~~$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 (4.8 / 5 · 5 reviews)

Jason ★★★★★ Oct 22, 2026

The merino fabric feels incredibly soft against my skin, and the nylon core means it holds its shape even after multiple washes. It’s the only bra I reach for on days when I want light support without any digging or pinching.

Matthew ★★★★★ Oct 21, 2026

I’ve been wearing this bra for light yoga and lounging, and the 150gm jersey is breathable without feeling flimsy. The nylon core definitely gives it more durability than I expected from merino.

Brian ★★★★★ Oct 20, 2026

The merino corespun fabric is the reason I keep reaching for this bra—it’s soft against the skin but the nylon core gives it just enough structure to feel secure all day. I’ve worn it on warm days and it breathes way better than my old cotton bras, so no clingy sweat patches.