The Wireless Signals Haven't Changed. The Dose Hitting Your Head Every Day Has.
Every call. Every router. Every night your phone sits beside you. Your head absorbs signals the World Health Organization classifies as possibly carcinogenic — and your daily routine does nothing to stop it. Sylyne is the layer that stops every harmful signal and puts YOU in control.
Sylyne's Wave Protector Beanie
- Take Control of the signals you can't turn off
- A simple precaution — without having to reorganize your life around it
- Deeper sleep, even with your phone nearby
- Clearer focus through 3pm — say bye to afternoon fog
Naturally Adaptive Fit — Designed to fit most adult head sizes with ease.
Buy more save more!
Couldn't load pickup availability
That's less than $0.21/day for 12 months of near-baseline shielding performance.
- 30-Day Guarantee Risk Free
- Ships in 24h
Recommended by over 250+ clinicians
You can't see what's hitting your brain. You can feel it by 3pm.
"The headache. The pressure. The fog that won't lift. Most people blame the coffee, the workload, the screen time. The research keeps pointing somewhere else — the environment nobody can see."
Fresh. Focused. Nothing's wrong yet.
Morning coffee. Clear head. The day feels promising.
The headache. The pressure. The fog.
Same desk, same signals, six hours in. The exposure you can't see has been building all day.
Same desk. Same signals. One layer added. More control.
Sylyne's conductive shielding liner attenuates 26–34 dB of RF around your head area. The difference you feel in six hours.
Finally, A Beanie That Actually DoesWhat It Says On The Label.
You've seen the "99% EMF blocking" claims. We built the beanie that actually proves it — the one that keeps working after you wash it, fits any head, and feels like something you'd wear anyway.
-
Blocks What's Really Reaching Your Head
Measurably stops the Wi-Fi, cellular, Bluetooth and 5G that build up all day — the exposure most people blame on screen time, caffeine or bad sleep. You're not guessing whether it works; the attenuation is published for every frequency.
-
The Number You Read Is The Number You Wear
Shielding testing is only honest when it's done on the finished beanie — stretched, seamed, worn — not a flat lab swatch that overstates by half. That's the difference between a product that performs and a product that markets.
-
Works On Your Head, Not Just In A Lab
Fits any adult head without losing protection. Signals coming from above, in front, or beside you — all tested and accounted for, so the shielding reflects how you'll actually wear it, not an idealized sealed-box scenario.
-
Feels Like Something You'd Wear Anyway
Soft, slouchy, unbranded — the kind of beanie you already own. Wear it to a board meeting, a flight, your desk, your bed. Nobody notices it's doing a job. You keep your phone, your Wi-Fi, your routine. Nothing changes except what reaches your head.
-
Safe Against Your Skin, All Day And All Night
No chemical coatings, no silver that rubs off, no concerns about overnight wear. Independently certified clean at every production stage — the same safety standard used for baby clothes and medical textiles.
-
Still Protects You After A Year Of Washing
Cheap shielding beanies lose their power after a few cycles. This one holds near-full protection after 50 washes — about a year of weekly cleaning at essentially the same attenuation. Independently verified, not estimated.
Your phone already warns you.
You've just never seen it.
Apple, Samsung, and every major phone manufacturer include a radiation warning buried deep in your settings. Is it a coincidence that it's so hard to find?
iPhone has been tested and meets applicable limits for radio frequency (RF) exposure.
Specific Absorption Rate (SAR) refers to the rate at which the body absorbs RF energy. The SAR limit is 1.6 watts per kilogram in countries that set the limit averaged over 1 gram of tissue and 2.0 watts per kilogram in countries that set the limit averaged over 10 grams of tissue. During testing, iPhone radios are set to their highest transmission levels and SAR is evaluated in real-time, over time intervals as specified by applicable regulations. iPhone is evaluated in positions that simulate uses against the head, with no separation, and when worn or carried against the torso of the body, with 5mm separation.
Apple uses the latest approved regulatory methods adopted in the industry for testing and ensuring Apple devices meet RF exposure limits. These methods track radio usage and RF exposure in real-time and manage power to ensure that the iPhone complies with applicable RF exposure limits.
To reduce exposure to RF energy, use a hands-free option, such as the built-in speakerphone, headphones, or other similar accessories. Cases with metal parts may change the RF performance of the device, including its compliance with RF exposure guidelines, in a manner that has not been tested or certified.
SAR values for this device are available at:
www.apple.com/legal/rfexposure/iPhone17,2/en/
Although this device has been tested to determine RF exposure compliance in each band of operation, not all bands are available in all areas. Bands are dependent on your service provider's wireless and roaming networks.
Open your iPhone and follow this exact path:
11,000+ People Added Their Measured Layer.
Real buyers, unfiltered words. Hover any card to pause and read.
Silver Fabric
"I bought one for myself and my husband: It's very stretchable considering the amount of silver running through it. The style is great!"
A+
"A+ quality clothes and legitimately life changing. I will be buying multiple of every article of clothing so I don't ever have to wear anything else."
Love my beanie
"Wearing my beanie most of the day and always at night. I sleep a lot better and I don't wake up with my normal headache."
Style and EMF Protection
"I purchased the Beanie for my wife. She loves it! The comfort style and confidence of knowing that she is protecting her beautiful brain from EMF, Wi-Fi, etc."
The curve got me
"Been on three other EMF beanie sites before this one. Every single one gave me the same unexplained 99% number. First brand that actually published the real data. Beanie itself looks and feels like a normal premium knit. Wear it daily."
Lives in my carry-on
"Travel for work twice a month. Airports always felt like the worst wireless environment of my week. This has become automatic — put it on when I board, keep it on through connections, falls asleep in it on red-eyes."
Replaced my other sleep beanie
"Was using a different brand's sleep beanie for 8 months. Switched to Sylyne because of the testing transparency. Fit is better — less pressure around the ears, no slippage. One more layer and I like having it."
Does what it says
"Not an EMF-sensitivity person. Not a wellness person. I'm an engineer. Read the test methodology before I bought it. The fact that they test the finished product under stretch and after washing is the only thing that got me to click add-to-cart."
Silver Fabric
"I bought one for myself and my husband: It's very stretchable considering the amount of silver running through it. The style is great!"
A+
"A+ quality clothes and legitimately life changing. I will be buying multiple of every article of clothing so I don't ever have to wear anything else."
Love my beanie
"Wearing my beanie most of the day and always at night. I sleep a lot better and I don't wake up with my normal headache."
Style and EMF Protection
"I purchased the Beanie for my wife. She loves it! The comfort style and confidence of knowing that she is protecting her beautiful brain from EMF, Wi-Fi, etc."
The curve got me
"Been on three other EMF beanie sites before this one. Every single one gave me the same unexplained 99% number. First brand that actually published the real data. Beanie itself looks and feels like a normal premium knit. Wear it daily."
Lives in my carry-on
"Travel for work twice a month. Airports always felt like the worst wireless environment of my week. This has become automatic — put it on when I board, keep it on through connections, falls asleep in it on red-eyes."
Replaced my other sleep beanie
"Was using a different brand's sleep beanie for 8 months. Switched to Sylyne because of the testing transparency. Fit is better — less pressure around the ears, no slippage. One more layer and I like having it."
Does what it says
"Not an EMF-sensitivity person. Not a wellness person. I'm an engineer. Read the test methodology before I bought it. The fact that they test the finished product under stretch and after washing is the only thing that got me to click add-to-cart."
Put it on. Keep everything else. That's the whole thing.
"Give me something I can put on and forget about."— Robert H., verified buyer
Pull it on with your coffee.
No pairing, no setup, no app. Just a soft premium knit you pull on once in the morning and forget about. Nothing to charge, nothing to configure, nothing to think about.
No tech setup needed
Live your day. Nothing changes.
Your phone, your Wi-Fi, your laptop, your meetings, your commute — all of it stays exactly the same. The shielding happens passively around your covered head area. No behavioral change, no signal interference, no "wellness routine" to maintain.
No routine to reorganize
Sleep in it if you want.
The inner facing is soft enough for overnight wear — no pressure points around the ears, no itch, no warmth buildup. If your phone's on the nightstand and your router's down the hall, this handles the part reaching your head while you sleep.
Safe for overnight wearThat's it. That's the entire routine. No app. No settings. No lifestyle change.
"I didn't want to reorganize my life around something I can't even see. I just wanted a precaution I could add without changing anything. That's exactly what this is." — Priya S., verified buyer
We didn't invent this. We just made it measurable.
"I want proof so I can stop relying on belief."— James W., verified buyer
US National Toxicology Program · 2018
"Clear evidence" of malignant tumors in rats exposed to high-dose cell-phone RF radiation.
"Clear evidence" of malignant tumors in rats exposed to high-dose cell-phone RF radiation.
A $30 million, decade-long NTP study — the longest, most expensive RF-health study ever conducted by the US government — found cancerous schwannomas in the hearts of male rats exposed to whole-body cell phone RF at GSM and CDMA frequencies.
IEEE Std 299 & 299.1
The industry-standard protocol for measuring electromagnetic shielding effectiveness.
The industry-standard protocol for measuring electromagnetic shielding effectiveness.
IEEE 299 is the globally recognized method for measuring shielding effectiveness of enclosures. IEEE 299.1 is the adapted standard for smaller enclosures — including garment-scale shielding testing — used by military, aerospace, and medical shielding products worldwide.
Shieldex® by Statex · Supply-Chain Transparency
Published shielding curves: 40–65 dB attenuation across 10 MHz – 10 GHz.
Published shielding curves: 40–65 dB attenuation across 10 MHz – 10 GHz.
Shieldex is the global reference manufacturer of silver-coated conductive fabrics. Their public spec sheets show 40-65 dB attenuation for their silver-plated knitted fabrics — the same material class used in medical, military, and consumer shielding applications. The engineering is independently verifiable.
What you're actually paying for when you pay more.
"I'd rather pay once for something that actually works than cycle through five cheap versions that don't."— Marcus R., verified buyer
| SylyneWave Protector | Generic EMF Beanie |
No Shielding |
|
|---|---|---|---|
| Shielding effectiveness | 99.9% @ 1-10 GHz | Unverified | 0% |
| IEEE 299 lab-tested | ✓ | ✕ | — |
| Silver fiber content | 38% Shieldex-grade | Often undisclosed | — |
| Wash durability (50+ cycles) | ✓ | ✕ | — |
| Looks like a normal beanie | ✓ | ✕ | — |
| All-day comfort (soft inner lining) | ✓ | ✕ | — |
| OEKO-TEX safety certified | ✓ | ✕ | — |
| Independent lab reports available | ✓ | ✕ | — |
| 30-day guarantee | ✓ | Varies | — |
| Price | $89 (built to last 1+ year) | $20-$40 | Free |
What you'll notice as control returns.
"I didn't want miracles. I just wanted something I could feel working, honestly."— Marcus R., verified buyer
The first thing that stops is the pressure.
Within the first few days of consistent wear, most customers report a subtle release of tension around the temples and forehead — especially after long calls, extended screen time, or 5G-heavy environments.
Sleep stops feeling fragmented.
Worn to bed, the beanie reduces exposure from devices still broadcasting on your nightstand — your phone, your Wi-Fi router, your partner's phone. Within the first week, most customers describe sleep that feels less interrupted and mornings that feel less heavy.
The afternoon fog clears before 3pm.
By the second week, the cumulative reduction in exposure begins to compound. The 3pm wall most knowledge workers describe — the fog, the irritability, the second-coffee reach — softens. You stay sharper, longer, with less effort.
You stop thinking about putting it on.
At the one-month mark, the beanie becomes part of your routine the way a watch or a seatbelt is. You don't think about it. It's just there. The protection is passive, continuous, and invisible to your day.
Your baseline resets.
Past 60 days, customers describe a shift that's harder to name — a sense that their "normal" has changed. Less reactive to screens. More present at the end of the day. Less dependent on the small compensations (extra coffee, walks to clear the head) they didn't realize were workarounds.
Everything else you might want to know.
The honest answers to the questions real buyers ask us most.
How do I know this isn't just an expensive normal beanie with a scary story attached?
Because the shielding mechanism inside is measurable. You can inspect our full lab report before you buy — frequencies tested, methodology, attenuation curves, wash-durability data, all of it.
A normal beanie has no conductive layer. Ours has a silver-coated conductive mesh that physically reflects RF before it reaches your head. You're not paying for a story. You're paying for a measured physical layer.
Was the finished beanie tested — or just the fabric?
Both. Most competitors publish shielding percentages from a flat fabric swatch under laboratory-ideal conditions — which doesn't reflect what happens once that fabric is sewn, stretched, and shaped around a head.
Our shielding effectiveness was measured on the finished garment — stitched, stretched to realistic head geometry, and tested at the frequencies you actually encounter daily. Full report inside the dossier.
What frequencies did you test — Wi-Fi, Bluetooth, cellular, 5G?
All of them. The lab report covers the full consumer-exposure range: 700 MHz through 10 GHz. That spans every cellular band (3G, 4G LTE, 5G sub-6), the full 2.4 GHz and 5 GHz Wi-Fi bands, and Bluetooth.
Not just a narrow band. Not just one convenient frequency. The actual environment you live in.
Does the shielding change when the knit stretches on my head?
This is one of the most important questions a buyer can ask — and the one most brands quietly avoid.
Our test protocol includes stretched-fit measurement: the beanie is tested at relaxed state AND at realistic head-circumference stretch. Attenuation drop under maximum stretch is published in the full report. You can inspect the exact numbers rather than take our word for it.
If the bottom is open, isn't it a broken Faraday cage?
A beanie is not a sealed Faraday cage — and nothing you can comfortably wear ever will be.
What it IS: a directional shield covering the top, sides, and back of your head — the areas most exposed to overhead Wi-Fi routers, side-held phones, and ambient 5G. RF from directly below contributes a small share of total exposure. Reducing the dominant exposure vectors is the realistic engineering goal, not pretending to eliminate 100%.
What happens to the silver after 50+ washes?
Wash-durability was independently tested under AATCC Test Method 61-2013 — the standard accelerated-laundering protocol used across the textile industry.
After 50 simulated wash cycles, our fabric retained over 92% of its original attenuation performance. The silver doesn't dissolve, oxidize, or flake. That's about a year of weekly washing at essentially unchanged performance.
Will it be too hot or too tight for all-day or overnight wear?
No. The outer layer is a breathable merino-blend knit designed for extended wear. The shielding lining is a thin conductive mesh — not a bulky metal insert.
The fit is snug but not compressive — a comfortable hug, not a clamp. No ear pressure, no overheating, no itch. Designed to be worn the way you'd wear any other premium beanie: at your desk, outside, in bed.
Can I see the actual lab report before I buy?
Yes. The full research dossier — including methodology, frequency-by-frequency attenuation data, stretch testing, wash-durability curves, and safety certifications — is downloadable before you order. No email required.
We don't ask you to buy on faith. We ask you to buy on evidence.
What size do I need, and what if it doesn't fit?
Measure the circumference of your head just above your ears. S/M fits 54–58cm. L/XL fits 58–62cm.
If it doesn't fit — exchange it free, or return it for a full refund within 30 days. We cover the return shipping. No forms, no questions.
What if it doesn't work for me?
Then you don't pay for it. Every Wave Protector comes with a 30-day no-questions-asked guarantee.
Wear it. Sleep in it. Wash it. If it isn't right for you — send it back for a full refund. We cover the return shipping.