Press

Everything you need to cover KOLDWR, on one page. For interviews, samples, or anything else: press@koldwr.com

The story in one paragraph

KOLDWR makes cooling underwear for the sauna. Peer-reviewed research links regular sauna heat to measurably reduced sperm count and motility, with effects lasting weeks after each session. Until now the workaround was balancing DIY ice packs on your lap. KOLDWR Pro is a boxer brief with a front-loading pouch that holds a swappable frozen gel pack, delivering 30+ minutes of targeted cooling at sauna temperatures so men can keep the most evidence-backed longevity habit without the trade-off.

The founder

KOLDWR was founded by Joacim, a Norwegian who grew up with sauna culture. Where he's from, the sauna isn't a biohack, it's a way of life. When the research on heat and male fertility caught up with the tradition, he built the product he wanted to wear himself. Designed by a Norwegian, shipped from the US.

[Founder headshot coming soon. Email us for one in the meantime.]

Key facts

Product: KOLDWR Pro Cooling Boxer Brief Kit
Price: $69 (1 kit) or $99 (2 kits)
In the box: 1x boxer brief (88% polyester / 12% spandex) with integrated cooling pouch, 2x reusable BPA-free gel packs, quick start guide
Cooling: 30+ minutes of active cooling at sauna temperatures (80–100°C)
Sizes: S–L (28–36" waist)
Shipping: ships free from the US in 24–48 hours, US only for now
Guarantee: 30-day money-back, no questions asked
Launched: 2026

Product images

Right-click any link to download the full-resolution file:

Flat lay with gel pack
Feature callouts
Full kit with both gel packs
On model, studio
In the sauna

What KOLDWR is not

KOLDWR is a wellness product, not a medical device. It is not intended to diagnose, treat, cure, or prevent any medical condition. KOLDWR is an independent brand and is not affiliated with, sponsored by, or endorsed by any public figure.

Contact

Press: press@koldwr.com
Everything else: support@koldwr.com