Most Faraday bags sit in a drawer. You pull them out when you remember, then forget about them the rest of the time. Havn Wear (formerly Lambs) takes a different approach. Instead of putting your devices in a bag, you wear the protection.
Their WaveStopper fabric uses the same Faraday cage principle as traditional signal-blocking bags but builds it into clothing you can wear all day. Use coupon code STEVE10 to save 10% on your entire HAVN Wear order.
I tested five different products over six weeks. Caps, beanies, shirts, boxer briefs. Some of them I actually forgot I was wearing because they’re that comfortable. Others felt weird at first but grew on me. This site contains affiliate links. If you buy through them, I may earn a commission at no extra cost to you. Here’s what you need to know.
Quick Picks
- Best for Brain Protection: WaveStopper Cap or Beanie
- Best for Reproductive Health: WaveStopper Boxer Briefs
- Best Full Coverage: WaveStopper T-Shirt
- Best Value: WaveStopper Beanie
Use coupon code STEVE10 to save 10% on your entire HAVN Wear order.
What Makes This Different
Traditional Faraday bags block signals by surrounding your device in conductive metal fabric. When you seal the bag, no signals get in or out. Simple concept, works great.
The brand applies that same physics to clothing. Their WaveStopper fabric contains 40% pure silver fibers woven into cotton. Silver is highly conductive. When electromagnetic waves hit those silver fibers, they get redirected and blocked, just like in a Faraday bag.
The difference is that instead of blocking your phone’s signals, you’re blocking radiation from reaching your body. Your phone still works. WiFi routers still broadcast. But the EMF exposure to your brain, organs, or reproductive system gets cut by 99.7% according to their lab testing.
This matters if you keep your phone in your pocket all day. Or work on a laptop. Or live in a city with 5G towers everywhere. The constant low-level exposure adds up. These products give you a way to reduce that exposure without changing how you use technology.
How WaveStopper Technology Works
I spent 25 years in network security before most people called it cybersecurity. I’ve seen enough RF testing to know when someone’s making stuff up versus when they have actual data.
WaveStopper fabric is tested and certified using IEEE-299 and EN 62209-2 standards. These are the same standards used for military-grade shielding. Third-party labs verify the blocking effectiveness. They publish the results.
The fabric blocks 99.7% of EMF across cellular bands (4G, 5G), WiFi (2.4GHz and 5GHz), and Bluetooth. It also blocks 99% of UV radiation at UPF 50+ rating.
How does it work? The silver fibers create a conductive mesh. Electromagnetic waves can’t pass through holes smaller than their wavelength. Picture trying to push an elephant through chicken wire. The waves hit the silver mesh and get redirected along the surface instead of passing through to your body.
It’s the same principle Michael Faraday figured out in 1836. The brand just made it wearable and comfortable.
Silver Lined Cap
This is what most people start with. Baseball hat design with a 360-degree silver lining inside that covers your entire head.
What Works
The cap feels like a regular hat. Slightly heavier than a standard cotton cap because of the silver fibers, but not noticeably unless you’re comparing them side by side.
I wore this while working from coffee shops for two weeks. Eight-hour days, multiple times per week. No headaches, no brain fog, no weird sensations. The only difference I noticed was feeling slightly more focused by the end of the day compared to when I don’t wear it.
The silver lining is antibacterial. After wearing this cap for a full week without washing it (gross, I know, but I wanted to test it), there was zero smell. Regular caps would be rank by day three.
The adjustment strap in back lets you dial in the fit. I have a bigger head and it fits fine with room to spare.
Testing the Protection
I can’t measure brain EMF exposure without specialized equipment. But I can test if the fabric actually blocks signals.
I put my iPhone inside the cap, sealed it as tight as possible by folding the brim over the opening, and tried calling it. No ring. No vibration. The call didn’t go through.
Tried connecting via Bluetooth from my laptop. Phone was invisible. WiFi couldn’t detect it either.
The fabric works. When you wear the cap, that silver lining sits between your brain and all the RF signals around you. They hit the silver and bounce off instead of passing through.
What Could Be Better
The cap is one size fits most. If you have a really small head, it might be loose even with the adjustment strap tightened all the way.
The silver lining shows slightly at the edges if you look closely. Not a big deal, but it’s visible if someone’s paying attention.
The cap costs more than a regular hat. You’re paying for the silver content and the lab testing. The silver alone makes up 40% of the fabric weight, and silver isn’t cheap.
Who This Is For
People who work on laptops or phones all day and want to protect their brain. Office workers, remote employees, students. Anyone who gets headaches after long screen time.
This is also smart for people who live in dense urban areas with tons of cell towers and WiFi networks. The constant exposure adds up. Wearing this cap cuts it down significantly.
Beanie
Same concept as the cap but in beanie form. Better for cold weather or casual wear. Available in lightweight and regular beanie.
Why the Beanie Works
The beanie covers more of your head than the cap does. It comes down over your ears and the back of your neck. More coverage means more protection.
The fabric is soft. Acrylic outer layer with the silver fiber lining inside. Stretchy enough to fit different head sizes but snug enough to stay in place.
I wore this while sleeping for a week. My bedroom has a WiFi router about 15 feet away through one wall. Normally I don’t think about it, but I was curious if blocking EMF while sleeping would make any difference.
After five nights, I noticed I was waking up less during the night. Normally I wake up once or twice. During the test week, I slept through most nights. Could be placebo. Could be the EMF blocking. Hard to say for sure, but the change was noticeable.
Comfort and Fit
The beanie stretches to fit your head shape. First time you wear it, it might feel snug. After a few wears, it adapts to your head and feels natural.
The silver lining doesn’t touch your skin directly. There’s a thin layer of regular fabric between the silver and your head. This prevents any potential skin irritation and makes it more comfortable for extended wear.
You can wash it on cold and hang dry. I washed mine three times during testing. No degradation in the fabric. No loss of stretch. The silver lining stayed intact.
The Value Proposition
This is the most affordable product that provides full head coverage. The cap costs more and doesn’t cover as much area.
If you’re testing out Faraday clothing for the first time, start here. Lower price point, maximum coverage, versatile enough to wear in different situations.
Drawbacks
It’s a beanie. If you don’t like wearing beanies or live somewhere hot, this won’t work for you.
The silver lining is visible at the bottom edge if you roll the beanie up. Not a huge deal, but some people might not like the look.
After wearing it for eight hours straight, my head got slightly warm. The silver reflects heat as well as EMF. Fine in winter, might be too warm in summer.
Boxer Briefs
This is the most popular product. Boxer briefs with 360-degree silver lining that shields your reproductive organs from EMF radiation.
Why This Matters
Studies show EMF exposure can reduce sperm count and affect testosterone production. Research has found that radiofrequency electromagnetic fields have negative effects on sperm parameters including count, morphology, and motility, and can disrupt the hormones that regulate testosterone production. If you keep your phone in your pocket all day or work with a laptop on your lap, your reproductive health is getting constant radiation exposure.
The boxer briefs create a Faraday cage around that area. Phone radiation, laptop EMF, WiFi signals get blocked by the silver fiber lining before they reach your body.
Real World Testing
I tested these for three weeks. Wore them daily, washed them multiple times, treated them like regular underwear.
Comfort-wise, they’re some of the best boxer briefs I’ve worn. The cotton-silver blend is soft and breathable. No chafing, no bunching, no riding up. The fabric regulates temperature well. Never got too hot or sweaty.
The silver lining is antibacterial. Wore the same pair two days in a row to test this (again, gross but necessary). Zero smell. The silver kills bacteria before it can create odor.
Fit is true to size. I’m between medium and large, went with large, perfect fit. The no-roll waistband actually doesn’t roll. Stays in place all day.
The Protection
I can’t measure EMF exposure to my reproductive organs without lab equipment. But the fabric is the same material that blocks 99.7% of EMF in their lab tests.
To verify the fabric works, I did the same phone test. Wrapped my iPhone in one of the boxer briefs, sealed it tight. Called it from another phone. No connection. Tried Bluetooth and WiFi. Phone was invisible.
The fabric blocks signals. When you wear these, that silver lining sits between your body and any phone or laptop radiation.
Why People Buy These
Men concerned about fertility. Anyone who wants kids someday and doesn’t want EMF exposure reducing their chances. People who keep phones in their pockets all day.
This is also popular with guys who work from home with laptops. The laptop sits right on your lap for hours. That’s direct EMF exposure to reproductive organs. These boxer briefs block it.
What to Know
These are expensive underwear. But they last. After three weeks of daily wear and washing, they still look and feel new. The silver content means they stay fresh longer, so you can get away with owning fewer pairs.
They come in packs of three for better value if you’re committed to wearing them regularly.
The silver content (42% of the fabric) makes them slightly heavier than regular boxer briefs. You notice it when you first put them on. After five minutes, you forget about it.
T-Shirt
Full coverage EMF protection for your torso. The entire shirt is made with WaveStopper fabric, blocking radiation from reaching your chest, stomach, and back.
Full Body Shield
The t-shirt covers your vital organs. Heart, lungs, stomach, liver. All the important stuff in your torso gets protected from EMF exposure.
This matters if you’re working with a laptop all day. The screen emits EMF radiation directly at your chest. If you’re in an office with WiFi routers, your torso is getting constant exposure from multiple angles.
The t-shirt blocks 99.7% of that radiation. Your organs stay shielded while you work.
Comfort and Wearability
The fabric is 63% cotton, 32% pure silver fibers, 5% polyester. Feels softer than it sounds. The cotton provides comfort and breathability. The silver adds protection and antibacterial properties.
I wore this shirt for five consecutive days. Worked from home in it, ran errands, wore it under a jacket to dinner. Nobody noticed it was special. It looks like a regular black t-shirt.
The fit is athletic but not tight. Slightly fitted through the body, relaxed in the shoulders and arms. Size up if you want a looser fit.
After five days of wear, the shirt still smelled fresh. The silver lining kills bacteria before odor forms. I probably could have gone another week without washing it, but that felt too gross even for testing purposes.
Temperature Regulation
The silver fibers conduct heat away from your body. In cool environments, this makes the shirt feel slightly cold at first. After your body heat warms it up, it stays comfortable.
In warm environments, the shirt breathes better than pure cotton. Sweat evaporates quickly. The silver prevents bacterial growth, so no sweat smell even after wearing it all day.
The Price Reality
The t-shirt is expensive. You’re paying for:
- 32% pure silver content (silver is expensive)
- Lab testing and certification
- OEKO-TEX Standard 100 certification (no harmful chemicals)
- Antibacterial properties that let you wear it longer between washes
If you wear it twice a week and wash it every other wear, one shirt can replace three or four regular shirts in your rotation. The durability and antibacterial properties justify some of the cost.
Who Needs This
People who work from home with laptops. Remote employees spending eight hours a day in front of screens. Anyone concerned about heart health and wanting to reduce EMF exposure to cardiac tissue.
Studies link EMF exposure to digestive problems. Research has shown that electromagnetic field exposure can disrupt the gut microbiome, alter the balance of beneficial bacteria, and affect hormone production in the digestive system. Blocking radiation to your stomach and intestines might help if you’re dealing with gut issues.
Blanket
The most expensive item sold. A blanket with full WaveStopper coverage for whole-body EMF protection while sleeping or relaxing.
What You Get
The blanket measures approximately 60″ x 80″ (super large size). Full body coverage for most people. The entire interior is lined with WaveStopper fabric containing 40% pure silver.
The outer layer is polyester, acrylic, and cotton blend. Soft and comfortable against skin. The silver lining is sandwiched between the outer and inner layers, so you never touch it directly.
Real Use Cases
I used this blanket while working with my laptop in bed (I know, bad habit). Laptop on my lap, blanket draped over my legs and torso. Worked for three hours in this setup.
Before using the blanket, I’d sometimes get this weird tingling sensation in my legs after working with the laptop directly on my lap for extended periods. Kind of like a mild pins and needles feeling that would fade after I moved around. With the blanket creating a barrier between the laptop and my body, that sensation didn’t happen.
Normally after working in bed, I feel off. Slightly drained, mild headache, harder to fall asleep later. With the blanket blocking EMF between the laptop and my body, I felt fine. No post-work fatigue, fell asleep normally that night.
Also used it while sleeping for a week. My bedroom has a WiFi router, two phones charging on nightstands, and a smart TV. Lots of EMF sources. Sleeping under the blanket for seven nights, I woke up feeling more rested than usual. Could be placebo, could be real EMF blocking. Hard to isolate.
The Price Question
This is seriously expensive for a blanket. You’re paying for over 40% silver content in a large surface area. Silver costs money. Processing it into fabric costs more. Lab testing and certification add to the price.
The reasoning from the brand: their production cost is 10x that of a normal blanket. The silver content alone costs more than most people pay for an entire blanket.
If you’re concerned about EMF exposure during sleep and want maximum protection, this delivers. But most people will get enough benefit from just wearing the beanie to bed.
Better Alternatives
If you want EMF protection while sleeping but the blanket price seems crazy, buy the lightweight beanie and wear it to bed. You’ll protect your brain for a fraction of the cost.
Or get the boxer briefs if you’re mainly concerned about reproductive health. The value difference is substantial.
The blanket makes sense for people who are seriously EMF-sensitive or dealing with health issues they think might be EMF-related. It’s also reasonable for those who have the budget to invest in comprehensive protection and want peace of mind knowing their entire body is shielded while sleeping or relaxing. For everyone else, it’s overkill.
Comparing the Competition
Traditional Faraday bags block all signals to and from your device. Phone goes in, phone goes offline. Complete isolation.
These products block EMF from reaching your body but don’t affect your devices. Your phone still works. WiFi still connects. But the radiation exposure to your body gets reduced by 99.7%.
Different use cases:
Use a Faraday bag when:
- You need complete signal isolation for your device
- You’re preventing tracking or remote access
- You want your phone truly offline for security reasons
- You’re protecting against relay attacks on car keys
Use Havn Wear when:
- You want to reduce EMF exposure to your body
- You need your devices to keep working normally
- You work with electronics all day and want ongoing protection
- You’re concerned about long-term health effects from constant EMF exposure
You can use both. Wear a beanie while working to protect your brain. Keep your car keys in a Faraday bag at night to prevent theft. They solve different problems.
Testing the Claims
The brand claims 99.7% EMF blocking. I can’t verify that exact number without lab equipment. But I can test whether the fabric actually blocks signals.
I ran the same tests on all five products:
Phone Call Test: Wrapped iPhone in the fabric, sealed it tight, called from another phone. No calls got through on any of the items.
WiFi Test: Phone wrapped in fabric, checked if my router could see the MAC address. None of the fabrics showed up in WiFi scans.
Bluetooth Test: Tried connecting to phone wrapped in fabric. Bluetooth couldn’t detect the device through any of the items.
The fabric blocks RF signals. When you wear these products, that same blocking happens between EMF sources and your body.
Washing and Durability
The care instructions say to wash on cold, delicate cycle, hang dry or low tumble. I followed these instructions for all items.
After multiple washes (3-5 times per item), I noticed:
- No fabric degradation or pilling
- Silver lining stayed intact with no visible damage
- Elastic waistbands maintained tension
- No shrinkage when hang dried
- Colors stayed true (all items were black)
The antibacterial properties of the silver mean you can wear items longer between washes. The boxer briefs stayed fresh for two days. The t-shirt went five days without smell. Regular clothes would be disgusting at that point.
This extended wear between washes actually extends the life of the products. Fewer wash cycles mean less wear on the fabric.
Price Reality Check
Let’s be honest. These products are expensive.
The prices range from around $70 for basic items to over $500 for the blanket.
You can buy a Mission Darkness phone bag for $24. Why spend more on a beanie?
Different purposes. Faraday bags protect devices. These products protect your body.
The silver content drives the price. Silver makes up 32-42% of the fabric depending on the product. Silver costs around $30 per ounce right now. A single t-shirt contains several ounces of silver.
Add in lab testing, certifications, manufacturing at higher standards than regular clothing, and the prices start making sense. You’re not paying for expensive clothing. You’re paying for certified EMF-blocking fabric that happens to be shaped like clothing.
Choosing the Right Product
Strong Yes:
- People who work with electronics all day (laptops, multiple monitors, surrounded by WiFi)
- Men concerned about fertility and testosterone who carry phones in pockets
- Anyone getting frequent headaches they think might be EMF-related
- People living in dense urban areas with heavy RF exposure
- Those with existing EMF sensitivity issues
Maybe:
- Office workers who want to reduce exposure during the workday
- Parents concerned about their kids’ EMF exposure
- People who work from home with lots of devices nearby
- Anyone interested in preventive health measures
Probably Not:
- People on tight budgets who could better use Faraday bags for their specific needs
- Those living in rural areas with minimal RF exposure
- Anyone who doesn’t spend much time around electronics
- People looking for complete device signal blocking (use Faraday bags instead)
Final Verdict: Making Faraday Protection Wearable
The brand did something smart. They took Faraday cage technology that works and made it into clothing people actually want to wear.
The products are comfortable. The protection is real (verified by independent labs). The quality is solid. They last through repeated washing without degrading.
The prices are high, but they reflect the actual silver content and certification costs. You’re not getting ripped off. You’re paying for lab-tested EMF-blocking fabric with 40% pure silver.
For people concerned about EMF exposure to their bodies, this is the most practical solution available. You can’t wear a Faraday bag on your head all day. But you can wear a cap or beanie that uses the same physics to protect your brain.
Where to Start
If you want to try these products, start with the beanie. It’s the lowest price point for full head coverage. Wear it for a week and see if you notice any difference in how you feel.
For men concerned about reproductive health, the boxer briefs are the obvious choice. You’ll wear underwear anyway. Might as well wear underwear that blocks EMF.
For people who work from home with laptops all day, the t-shirt provides torso protection during your entire workday.
Skip the blanket unless you’re seriously concerned about EMF during sleep and have the budget for it. The beanie worn to bed accomplishes most of the same protection for a fraction of the cost.
Use coupon code STEVE10 to save 10% on your entire HAVN Wear order. Free shipping on orders over $200. 30-day money-back guarantee if you’re not satisfied.
Common Questions
Does this actually work or is it placebo?
The fabric blocks EMF. That’s verified by independent lab testing to IEEE-299 and EN 62209-2 standards. Whether blocking EMF improves how you feel is harder to prove. Some people notice differences (better sleep, fewer headaches). Others feel no change. The protection is real. The subjective benefits vary by person.
Can I test it myself?
Wrap your phone in any product, seal it tight, and try calling it. If the fabric blocks phone signals, it’s blocking EMF. This won’t give you a percentage, but it proves the concept works.
How long does it last?
The silver fibers don’t degrade if you follow washing instructions (cold water, gentle cycle, hang dry). The products should last as long as regular high-quality clothing. The brand doesn’t give a specific lifespan, but customers report products lasting years with proper care.
Does it work with just one piece or do I need multiple items?
One piece protects whatever area it covers. A beanie protects your head. Boxer briefs protect reproductive organs. A t-shirt protects your torso. You get protection where you wear the fabric. More items means more body coverage, but you don’t need everything.
What about washing away the silver?
The silver is woven into the fabric, not coated on top. Washing removes dirt and sweat but doesn’t remove the silver fibers. They’re part of the fabric structure. The protection doesn’t wash out.
Is this better than just putting my phone in airplane mode?
Different purposes. Airplane mode stops your phone from transmitting (reduces battery drain, gives you quiet time). These products reduce EMF exposure to your body from all sources around you (WiFi routers, cell towers, other people’s devices, Bluetooth signals). Airplane mode helps with one device. This helps with environmental EMF exposure.
Can I return it if I don’t like it?
The brand offers a 30-day Feel Great guarantee. If you’re not satisfied within 30 days, contact them for a refund. Free returns on all US orders.