TestGuard Sauna Cooling Shorts

TestGuard Sauna Cooling Shorts

S
£39.00
£39.00 £60.00
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TestGuard Sauna Cooling Shorts
  • TestGuard Sauna Cooling Shorts
  • TestGuard Sauna Cooling Shorts
  • TestGuard Sauna Cooling Shorts
  • TestGuard Sauna Cooling Shorts
  • TestGuard Sauna Cooling Shorts
  • TestGuard Sauna Cooling Shorts
  • TestGuard Sauna Cooling Shorts
  • TestGuard Sauna Cooling Shorts
TestGuard Sauna Cooling Shorts

30-day money back. No questions.

TestGuard Sauna Cooling Shorts

£39.00
£39.00 £60.00

Designed to protect your fertility from heat damage, extend sauna sessions and performance. Made with 100% cotton for zero synthetics against open pores. 
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☑ Guaranteed to help your testicles stay cool and protected or your money back.

Why TestGuard?

You built the sauna habit for a reason. TestGuard is built so you don't have to choose between keeping it and protecting what matters.

Most cooling products weren't designed for a sauna. They were designed for post-vasectomy recovery or everyday fertility support and they fail in real sauna heat. TestGuard was engineered specifically for the 80–100°C environment, for the full duration of a real session, in shorts that you can wear at any commercial gym.
Care & Maintenance

Shorts are machine washable.

  • Machine wash cold or warm
  • Tumble dry low or air dry
  • Remove the gel insert before washing

Rinse under gel inserts cold water and wipe clean with a damp cloth after use. Let dry fully before storing or refreezing.

  • Do not machine wash, boil, or microwave
Size & Fit

Our products are crafted to fit true to size, ensuring that you can confidently select your usual size with ease. Whether you’re looking for a relaxed or tailored fit, our designs are made to complement your unique shape and style.

Protect the protocol and your biology.

The Hidden Cost of your sauna habit

The Science Is Clear — Heat Kills Sperm

Your scrotum exists outside your body for one reason: sperm needs to be 2-4°C cooler than core body temperature. A single sauna session overwhelms this cooling system for hours. The research is unambiguous.

>50% Drop in sperm concentration after 2x weekly sessions Garolla et al., 2013
-54% Drop in motility — sperm that can actually reach an egg Bryan Johnson, 2024
1 session A 20-minute sauna is enough to suppress sperm count. Procope, 1983

Ultra-breathable. All natural.

At 80–100°C, your pores are fully dilated. Whatever fabric is sitting against your skin in that environment is being absorbed.

Polyester swimwear in a sauna means microplastics, phthalates, and synthetic dyes making direct contact with the most hormonally sensitive area of your body, every session.

TestGuard is 100% cotton throughout:

  • Zero synthetic contact with open pores at peak heat
  • Stays light — won't soak heavy with sweat
  • Natural moisture wicking without trapping heat
  • Relaxed fit — breathable and non-compressive
  • No microplastics shed against the skin

The Engineering Behind Protection

TestGuard is a purpose-built thermal management system engineered for one thing: maintaining safe testicular temperature during full sauna sessions.

01

Active Cooling (0–30 min)

BPA-free ergonomic gel insert sits in a dedicated internal pouch, positioned in direct contact with the scrotal area. Maintains a localised temperature differential that keeps testicular temp in the safe zone even as ambient air hits 100°C.

02

Passive Insulation (30 min+)

Once the insert absorbs the session's heat load, the integrated cotton-lined insulating layer continues to act as a thermal barrier — slowing re-heating significantly versus unprotected skin or standard underwear.

03

Swap and Extend

Two inserts ship with every pair. Swap mid-session for coverage up to 60 minutes. For sauna-cold plunge cycles, run both inserts back to back without a gap in protection.

Validated by 80+ years of scrotal cooling research (Lancet, 1941–present)

TestGuard vs. The Alternatives

Feature TestGuard Swimming Shorts
Designed for 80–100°C Built for real sauna conditions Designed for pools, not heat
How it protects Built-in, invisible, and drip-free heat protection Manual ice pack — melts in minutes
Maintains safe testicular temp Engineered dual-phase barrier No cooling — traps heat
BPA-free, skin-safe materials 100% cotton, no synthetics Polyester = microplastics near pores
30-day money-back guarantee Full refund, no questions N/A

Protect your protocol with 0 risk

Try TestGuard for 30 days. If you don't feel more confident about your protocol — we'll refund, no questions asked.

Common Questions

Do I really need these if I sauna regularly? +

If you sauna more than once a week, the research says yes. A single session can suppress sperm production by over 50%.

Will people notice I'm wearing them? +

No. TestGuard looks like normal athletic shorts with invisible inner protection.

How long do the gel packs stay cold? +

Approximately 30 minutes in a standard 80°C sauna. After that, the 3-layer construction provides passive insulation.

Can I cold plunge in these shorts? +

Yes, you can — just know the cotton will get a bit heavier than standard swim shorts once wet, since it absorbs water rather than repelling it. We chose cotton specifically so there's no synthetic fabric, and no microplastics, against your skin. Worth keeping in mind if you're doing a sauna-to-plunge cycle.

Can I use these if I'm not trying for a baby? +

Yes. Sperm quality affects testosterone, energy, and overall vitality — not just fertility.

What sizes do you offer? +

S through L, sized for UK/EU standards. 30-day free returns and exchanges.

What's your return policy? +

30-day no-questions-asked returns. Free exchanges for sizing.

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