code BF50
a man and a woman wearing black baseball caps
a black baseball cap with the text black over 99 % off wireless radiation from reaching
a circular poster with a pattern of birds
a baseball cap with the details labelled
a man wearing a black hat with the words protect your brain
a woman wearing a black hat with five stars on it
a man and a woman wearing black baseball caps
a black baseball cap with the text black over 99 % off wireless radiation from reaching
a circular poster with a pattern of birds
a baseball cap with the details labelled
a man wearing a black hat with the words protect your brain
a woman wearing a black hat with five stars on it

481 reviews

WaveStopper™ Cap

$89
Made with WaveStopper™ Technology which blocks 99% of EMF radiation.
  • Protects your brain
  • Supports cognition & mental clarity
  • Promotes long-term health
-+
HSA/FSA Eligible with
30-Day Money-Back Guarantee

EMF Radiation-Proof

Blocks over 99.7% of EMF (wireless radiation), 360-degree coverage.

Independently Certified

Tested and certified using IEEE-299 and EN 62209-2 standards.

Naturally Antimicrobial

Pure silver fibers lining helps fight odors and stays fresh 3x longer.

Incredible comfort

Effortlessly safeguard your well-being with premium fit and comfort.

The WaveStopper™ Cap was built to block over 99.7% EMF from reaching your brain to provide the ultimate peace of mind (literally) when around cell phones, wifi, or other electronic devices.

The World Health Organization, the NIH, and the CDC all issued warnings regarding EMF exposure and brain cancer. Additionally, the health risks associated with EMF radiation exposure on brain health include:

  • Memory and cognitive problems
  • Headaches, difficulty concentrating and focusing
  • Sleep disturbances
  • Increased risk of developing brain cancer
  • Increased risk of neurological disorders such as Alzheimer's disease and Parkinson's disease

Wearing HAVN helps you enjoy technology while minimizing its impact on your health & wellbeing.

The WaveStopper™ Cap features an inner 360º silver lining of WaveStopper™ fabric (99.7% EMF blocked) to help protect your brain while keeping bacteria, odors, and UVs at bay.

  • WaveStopper™ certified: blocks 99% of EMFs (cell phone radiation, 4G, 5G, Wi-Fi, Bluetooth)
  • UPF-50+: blocks 99% of harmful UV rays (UVAs and UVBs)
  • Antimicrobial & anti-odor
Composition:
WaveStopper™ inner layer: 100% pure silver fibers.
Outer layer: 100% cotton.

Certified with the OEKO-TEX® Standard 100, our materials are rigorously tested to be free from harmful substances, ensuring safety and quality in every thread. Our products do not contain any nanoparticules.

To extend the life of HAVN products, wash on cold and delicate, using your regular detergent, and hang dry or low tumble. HAVN is designed to adapt to your body for the perfect fit after the first wash.

This product is tested and certified using IEEE-299 and EN 62209-2 standards by leading independent laboratories. In addition, they are Antibacterial/Antimicrobial. See the full results here.

Enjoy free shipping on orders over $200, and free returns on all orders within 30 days of receipt using a hassle-free pre-paid label. US customers only.

Yup. We know. It’s not cheap. So what makes HAVN more expensive than your average big bucks store garment?

#1, the fabric. Our proprietary fabric uses over 40% of silver fibers and cost the same to produce as cashmere. This is not counting the R&D cost in order to make it soft and cozy.

#2, the manufacturing. We care about making the most premium, high-quality clothing on the planet. To ensure this, we partnered with a factory that pays equitable wages, offers fair time-off, and is certified OEKO-TEX – the highest environmental rating. This commitment also means we pay a ~30% premium on manufacturing, a choice we proudly stand by.

#3, the quality-control. You trust us with your long-term health. We take this seriously. That means that we have increased quality control to ensure every production batch is respecting our highest quality standards.

All in, our cost of production is ~10x that of a normal, equivalent piece of clothing. Now, we could (maybe) do it without #2 and #3. But it wouldn't be right. It wouldn't be HAVN. Our commitment? With us, you will always get what you pay for.

14,663 People Love Their WaveStopper™ Cap

Mentally Sharp w/ WaveStopper Cap
"Love the WaveStopper Cap. Great fit and WOW has it made a difference in the way I feel these days. No more brain fog and I feel sharp mentally. Very grateful."
A R.
Verified Buyer
Great hat!!
"I actually bought the cap for my daughter. And she loves it. She works on a computer all day and she always had headaches. Since she started using this, it is rare that she gets a headache. It definitely does its job."
Ava H.
Verified Buyer
I feel safer
"I feel so much safer with my beanie and cap hats. I use them for sleeping, being around wifi/5G towers and in my electric car. Great material and high quality, for sure."
Natalia D.
Verified Buyer
The best thing since sliced bread!
"I noticed the 1st day of wear my brain fog and short term recall improved. I'd been having problems with short term memory. Turns out it must have been EMF because it's gone and hasn't returned."
Ellen G.
Verified Buyer
It WORKS!
"Very nice looking cap. My husband was skeptical at first but after not wearing it a few days realizes it really does work. Thank you HAVN! read more about review content Very nice looking cap. My husband"
Donna N.
Verified Buyer
No more dizziness
"Had been dizzy every day for about 1 year. I received the WaveStopper cap and put it on. A few minutes later I realized I was no longer dizzy. One of the best investments I've ever made."
Larry H.
Verified Buyer
Improved cognition
"Definitely has helped with brain fog, I can remember stuff much faster and keep my train of thought much better."
RYAN L.
Verified Buyer
LAB TESTED AND CERTIFIED
BACKED BY SCIENTIFIC STUDIES
HSA/FSA ELIGIBLE

WaveStopper™ Technology

The WaveStopper™ Headwear products feature a full coverage of WaveStopper™ Technology, our proprietary radiation-proof fabric-technology for regular garments.

Crafted with pure silver fibers, creating a strong shield against EMFs

Tested in and certified by leading independent laboratories

Guaranteed to block over 99.7% of EMFs, including signals from cellphones, 4G, 5G WiFi, and Bluetooth & UV50+.

Heatmap which shows significantly less radiation compared to the other image
WITH HAVN
Heatmap which shows significantly more radiation compared to the other image
WITHOUT HAVN

EMF and Brain Health

EMF from your smartphone and other devices can have a drastic effect on your BRAIN!

We recently conducted an experiment with Aspen Neuro and the EEG (Electroencephalography) results were mind-blowing:

❌ Without the HAVN Wavestopper™ Headwear A drastic increase in Beta and High Beta waves (13-35 hz), associated with stress and anxiety.

✅ With the HAVN WaveStopper™ Headwear By blocking EMF, we see significantly reduced levels of stress and anxiety, back to normal activity.

Read more

HAVN Actively Supports your Mind

HAVN is the world’s first health-enhancing apparel with scientifically proven positive effects on both the body and mind.

78% of Lambs customers report a boost in cognition (reduced brain fog and headaches) and memory.

Scientifically Proven

The World Health Organization, the NIH, and the CDC all issued warnings regarding EMF exposure and brain cancer.

The NIH’s meta study revealed a potential link between long-term mobile phone use and brain tumor risk.

Wearing HAVN helps you enjoy technology while minimizing its impact on your health & wellbeing.

Read more

Loading reviews

Frequently Asked Questions

The WaveStopper™ Cap is made from our innovative WaveStopper™ technology which is NASA-inspired and powered by silver fibers and locally grown cotton.
You can wash the WaveStopper™ Cap with the rest of your clothes, preferably on cold and with hung dry or tumbled dry low.
The WaveStopper™ Cap creates the equivalent of a faraday cage around your brain. WaveStopper™ is made using a proprietary mesh of natural silver fibers. The conductivity of silver helps create an electromagnetic shield that prevents electromagnetic frequencies from entering the cap and reaching your brain.
Silver is scientifically proven help prevent bacteria growth. By using close to 40% silver fibers into our fabric, our WaveStopper™ Cap is specially designed to help keep you fresh longer.
You have 30 days after the product has been delivered to return it, even if used! To start a return process, you can email us at hello@havnwear.com and we will send you the instructions on where you can obtain your shipping label.
All of our products are OEKO-Tex Certified which means that they are free from any harmful chemicals.
EMF, or electromagnetic frequencies, are radiation emitted by your cell phone, wifi, 5G antennas, and any connected devices such as smartwatches, fitness trackers, or modern cars.

30-Day Feel Great™ Money-Back Guarantee

At HAVN, we strive to provide top quality products and exceptional customer experience.

If for any reason you are not 100% satisfied with your HAVN products, please reach out to us within 30 days of your purchase and we will make it right.

More Radiation-Blocking Apparel

Two caps floating in the air above a white stone block.
Headwear
5 products
A man wearing a black long sleeve.
Tops
5 products
Black boxer briefs.
Bottoms
2 products
Pajama set on bed.
Loungewear
3 products