Sauna Smarter. Stay Cooler. Think Ahead.

THE SCIENCE BEHIND COOLCORE™

Sauna Smarter.
Stay Cooler.
Think Ahead.

Heat can negatively affect sperm health. CoolCore™ helps men enjoy heat routines with more confidence and comfort.

Shop Now Learn the Science
Free Shipping 90-Day Guarantee Discreet Checkout

THE HEAT FACTS

Heat can affect sperm health.

Research suggests repeated high-heat exposure may negatively affect sperm count, motility, and overall sperm quality.

Sperm works best cooler

The testes naturally stay a few degrees below core body temperature to support healthy sperm production.

Heat exposure adds up

Frequent saunas, hot tubs, and other high-heat routines may increase testicular temperature.

Small changes matter

Reducing unnecessary heat exposure may help support comfort, confidence, and fertility awareness.

Learn the Science

Science-backed design • Comfort-first approach • Discreet checkout

THE HEAT IMPACT

Heat can reduce sperm count

Multiple studies show that elevated testicular temperature may negatively affect sperm count, motility, and overall sperm quality.

View the Research →
-0%

Sperm Count

Men exposed to high heat had up to 39% lower sperm count.

Source: Human Reproduction, 2018
-0%

Sperm Motility

Heat exposure was linked to up to 28% reduction in sperm motility.

Source: Fertility and Sterility, 2017
2-0°C

Makes a Difference

Just a small increase in testicular temperature can impact sperm production.

Source: Mayo Clinic Proceedings, 2019

Why CoolCore™?

1. Targeted Cooling

Cooling is focused where men need it most during sauna use.

2. Discreet Design

No awkward ice packs. No strange setup. No uncomfortable conversations.

3. Sauna-Specific Use

Made for men who use sauna and want a practical way to reduce heat anxiety.

4. Comfortable Fit

Designed to feel like premium briefs, not a medical device.

5. Reusable Inserts

Simple to freeze, insert, wear, and reuse.