Thirdlove Launches TempSync™, The First-Ever Temperature-Regulating Intimates Collection for Women

SAN FRANCISCO, May 29, 2025 /PRNewswire/ -- Thirdlove, the female-founded lifestyle brand known for its inclusive sizing and signature half-cup bras, today announced the launch of TempSync, a temperature-regulating bra and underwear collection designed to support women through  perimenopause and menopause. The line introduces three essential styles—TempSync T-Shirt Bra, TempSync Wireless Bra, and TempSync Hipster—bringing functional innovation to the lingerie drawer.

"So many women silently deal with temperature swings, night sweats, and hot flashes—and most lingerie is not made with that in mind," said Heidi Zak, Co-Founder and CEO of Thirdlove. "We designed this collection to meet a real need and help women stay cool, dry, and confident—especially during times when their bodies are changing."

At the heart of the collection is 37.5 Technology, a fabric long used in men's performance apparel and now applied to women's intimates for the first time. Infused with natural minerals, it actively balances body temperature to help maintain an optimal core temperature. Lightweight foam and perforated detailing further enhance airflow, delivering next-level comfort through hot flashes, hormonal changes and everyday temperature shifts.

To help break the stigma around menopause, Thirdlove partnered with actress and advocate Jennie Garth, who has spoken openly about her own menopause journey. Together, they aim to encourage open conversations and bring visibility to a lifestage too often overlooked.

"I've shared my personal experiences with my menopause journey because it's time we talk about it more openly. We deserve this moment!" said Garth. "Thirdlove's new TempSync collection has genuinely made a difference for me, this unique fabric works with your body temperature, making hot flashes much more manageable. These intimates are a meaningful step toward normalizing menopause, something we will all go through and ensuring all women feel seen, supported, and confident."

Available in three classic colorways, Black, Taupe, and Air, prices for each style range from $20 to $78. The collection is now available for purchase at thirdlove.com and includes:

• TempSync T-Shirt Bra: The high-performance twist on Thirdlove's iconic 24/7 Classic T-Shirt Bra. Featuring lightweight perforated foam cups for shaping, coverage, and breathability, this bra is available in 45 sizes, including signature half-cups, for A–H cups and 32–42 bands.
• TempSync Wireless Bra: A wire-free essential with a barely-there feel, adjustable 2-in-1 straps, and a tagless back closure for friction-free comfort. Made with Precise Sizing for a more inclusive fit— offering 3x more sizes than standard wireless bras. Available in sizes XS–3X.
• TempSync Hipster: This ultra-soft cooling underwear adapts to your body's temperature to keep skin dry and irritation-free throughout the day. Available in sizes XS–3X.

For more information about Thirdlove, please visit www.thirdlove.com and follow along on social media @thirdlove.

About Thirdlove
Thirdlove creates intimates that are both sexy and comfortable—no compromise needed. Founded and led by women, the brand pioneered half-cup sizing and now offers over 70 sizes to help women find their ideal fit. With a focus on comfort, function, and thoughtful design, Thirdlove offers solutions for every need, from their 24/7® Classic T-Shirt Bra to wireless, smoothing and minimizing styles. The brand has donated over $50 million in products to women in need and has over 180,000 5 star reviews on its products.

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SOURCE Thirdlove