★★★★★
“My gf was telling me about this after watching a reel and I didn't realise it was a real thing”
— Andrew D
CoolCore™ Sauna Cooling Boxers
CoolCore™ Sauna Cooling Boxers
Regular price
£34.99
Regular price
£34.99
Sale price
£69.99
Unit price
per
CoolCore™ Cooling Briefs are made for men who use the sauna but worry about heat and fertility.
The cooling inserts help keep the testicular area cooler during each session.
Simple, discreet, and designed for more peace of mind.
✓
Not visible under shorts
✓
Eliminate fertility anxiety
✓
Sauna longer without the heat worry
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CoolCore™
What’s Included
CoolCore™
What’s Included
Everything you need for confident sauna sessions.
1
1 × CoolCore™ Sauna Cooling Boxers
2
2 × Reusable and removable cooling pouch system
Designed for everyday sauna use
Made with breathable performance fabric designed to stay comfortable in intense heat.
“I didn’t realize how much sauna heat worried me until I tried CoolCore™. I feel more relaxed during every session.”
How CoolCore™ Supports Sauna Confidence
How CoolCore™ Supports Sauna Confidence
CoolCore™ gives men a smarter way to enjoy sauna sessions with less worry. The discreet cooling insert helps reduce direct heat exposure where the body is most temperature-sensitive, so you can stay focused on recovery, relaxation, and performance.
Materials
Materials
Made from 95% breathable cotton with just 5% comfort stretch, enough to help the briefs move with your body, hold their shape, and stay secure during sauna use without feeling synthetic heavy.
Our Guarantee
Our Guarantee
If you're not 100% satisfied within the first 60 days, just send it back to us and we'll give you a full refund.
No need to worry about the return shipping - we've got you covered!
Shipping & Delivery
Shipping & Delivery
We process orders within 24-72 hours and deliver them within 6-10 days depending on your location, with tracked shipment included for your convenience.
Size Chart
| SIZE | Waist (in) |
|---|---|
| S | 27.5–30 |
| M | 30–33 |
| L | 33–35 |
| XL | 35–38 |
| XXL | 38–41 |
CoolCore™ Sauna Cooling Boxers
Regular price
£34.99
Regular price
£34.99
Sale price
£69.99
Unit price
per
Why Heat Protection Matters During Sauna
How heat exposure can affect comfort, confidence, and fertility-focused routines.
1
Sauna heat raises testicular temperature
→
2
High heat exposure may affect sperm quality
→
3
Recovery takes 74–90 days after heat exposure
→
4
CoolCore™ helps protect where it matters most
1
Sauna heat raises testicular temperature
→
2
High heat exposure may affect sperm quality
→
3
Recovery takes 74–90 days after heat exposure
→
4
CoolCore™ helps protect where it matters most
→
Sauna Confidence
Discreet Fit
Designed to look like normal dark navy performance briefs, so you can wear them confidently!
Not visible under shorts
Looks like normal performance briefs
Wear with confidence
How to use CoolCore™
How to Use
Simple steps for confident sauna sessions.
Insert
Place the cooling insert inside the pouch
Wear
Put on CoolCore™ before entering the sauna
Enjoy
Use during your normal sauna session
Air dry
Remove and air dry after use
01
Cooling pouch technology
Targets and cools the testicular area without restricting movement.
02
Premium, breathable fabric
Moisture-wicking, ultra-soft, and built for high heat.
03
Invisible under clothes
Wear it with confidence in any public or private sauna.
04
Built for sauna confidence
Designed to support a cooler, more comfortable sauna routine.
Trusted by men who care
★★★★★
“Easy to wear and great to know were keeping our wives happy”
— Chris L & Martin B
★★★★★
“Had to buy after seeing them sell out every week ,must have for any serious sauna goers.”
— Marcus T.
★★★★★
“Great addition to the sauna bag and routine, now we can sauna for 35+ mins each session.”
— Jake & Ryan & Timmy
★★★★★
“Finally Stress free for me and my wife!!!”
— James H
★★★★★
“I've been increasing the number of times I go to sauna since my wife bought me these”
— Daniel K.
★★★★★
“Hot tub and sauna never felt so good :)”
— Freddie G
★★★★★
“Wanting something like this for years, now I am stress free when I walk into the health suite.”
— Paul B
QUESTIONS MEN ASK BEFORE THEIR FIRST SAUNA SESSION
CoolCore™ FAQ
How does CoolCore™ stay cool?
CoolCore™ uses reusable cooling inserts that sit inside the built-in pouch area. Chill the inserts before use, place them inside the pouch, and they help provide targeted cooling during your sauna session.
Can I wear it in a dry sauna and infrared sauna?
Yes. CoolCore™ is designed for both traditional dry saunas and infrared saunas. It is made to support comfort during high-heat sessions.
How does sauna heat affect fertility?
Sperm production is sensitive to heat, and the testicles are naturally designed to stay cooler than the rest of the body. Regular high-heat exposure from saunas may temporarily affect sperm health, which is why many men choose to reduce direct heat exposure during their sessions.
Is the cooling pouch removable?
Yes. The cooling insert is removable, so you can use the briefs with or without it depending on your preference.
Can I use CoolCore™ in a public sauna?
Yes. CoolCore™ is designed to look and feel like normal black briefs, so you can wear them discreetly in public saunas, gyms, spas, or at home.
How long does the cooling effect last?
The cooling effect depends on sauna temperature, session length, and how cold the insert is before use. For best results, fully chill the insert before your sauna session.
Can CoolCore™ improve my sperm count?
CoolCore™ does not guarantee changes in sperm count or fertility results. It is designed to help manage one important lifestyle factor: heat exposure during sauna sessions.
How do I wash it?
Remove the cooling insert before washing. Wash the briefs on a gentle cycle with cold water and air dry. Do not wash or tumble dry the cooling insert.
What size should I choose?
Choose your normal underwear size. If you are between sizes, we recommend sizing up for a more comfortable sauna fit.
Can I use it if I’m trying to conceive?
Yes, CoolCore™ can be used by men who want extra peace of mind during sauna sessions. It is not a medical device and does not diagnose, treat, or prevent fertility issues. If you have fertility concerns, speak with a healthcare professional.
What if it doesn’t fit?
No problem. If the fit is not right, contact our support team and we will help you with an exchange or return according to our guarantee policy.
Is CoolCore™ a medical device?
No. CoolCore™ is not a medical device and is not intended to diagnose, treat, cure, or prevent infertility. It is designed to help reduce heat exposure during sauna use and support peace of mind.
See how customers are using it at home
James Carter
2026-04-11
Honestly surprised me. I use the sauna a few times a week and these feel much more comfortable than normal shorts. The zip pocket is discreet and the fabric feels good
Daniel Hughes
2026-02-28
Bought these mainly for sauna sessions and they do the job well. Comfortable fit, not too tight, and the pocket is barely noticeable when wearing them.
Mark Robinson
2026-04-17
material feels premium and the cooling pads are easy to insert and remove
Lucas Taylor
2025-07-18
Great value for money, simple to use and looks fantastic.
Thomas Reed
2026-05-12
Got 1 and then bought the multipack as there so comfy !
Nathan Brooks
2026-02-11
I bought two pairs and use them at the health club.
Jack Turner
2026-03-12
I was worried the zip would be uncomfortable, but I barely notice it when wearing them.
Henry Adam
2026-03-11
Didnt think i would need these but they are actually good. Wore them in sauna and felt better than normal shorts
Sam Cooper
2026-01-11
They fit well and feel soft. Delivery took few days but product is good.
George Hill
2025-12-11
Really happy with it. Looks clean and feels good in sauna
Max Young
2025-07-11
The quality feels much better than I expected. The fabric is smooth, the fit is clean, and the zip pocket is very discreet.
Nicholas Turner
2026-02-02
makes more sense once you actually use it.
Maxwell Price
2026-02-11
Well made, comfortable, and discreet. The front pocket is secure without being obvious, and the whole product feels very refined.
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