Are there any tests done by the company to prove your product blocks any signal?

Hello there, Thank you for contacting us. We have had our products tested by an FCC independent lab that specializes in RF/Microwave testing. The lab uses directional measurement in an isolated environment, which eliminates all external influences, ensuring no test result interference. You can see the results on our DefenderShield website under the About section or by copy and pasting the following link on your browser: https://www.defendershield.com/testing/ Warm Regards, The DefenderShield Support Team

How do you wash this hat to keep emf-proofing?

Hello, Thank you for contacting us. We encourage gentle hand washing and hanging to dry as the preferred method of caring for the beanie as continued use with a high level of agitation in a washing machine can potentially break down the silver fiber shielding material. Please rest assured that we are very confident that this would not be the case with just one use. We hope this information helps! Kindest regards, The DefenderShield Support Team

What is the circumference of the medium size beanie please?

Hello there, Thank you for contacting us. The Child Size - EMF Protection Beanie circumference is: 20-25 (inches). The Adult Size - EMF Protection Beanie Circumference is: 23-28 (inches). Hope this answers your question. Warm Regards, The DefenderShield Support Team

The majority of commercial 5g networks are relying on spectrum in the 3.5 ghz range (3.3 ghz-4.2 ghz). does your hats protect from this frequency?

Thank you for contacting the DefenderShield Team. the EMF Radiation Protection Beanie is designed to shield (5G) RF radiation (300 Hz-10 GHz) from reaching the head, by acting as a barrier between your head and a device or source of emission. we hope this helps.

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DefenderShield EMF Radiation Protection Beanie Cap - Blocks 99% of Wireless EMF & 5G Radiation (300Hz-10 GHz) Gray Adult

Product ID: 369527784

🎯Adjustable 21.5-inch circumference fit

🌬️Lightweight, breathable cotton-nylon blend

🛡️Blocks 99% EMF & 5G radiation

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23914F

Duties & taxes included

In stock

Sold byAmazon New CaledoniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Stay ahead of the radiation curve—because your brain deserves VIP protection!

WEAR IT ANYWHERE - Perfect for travel, office, or outdoor adventures—stay protected wherever life takes you.
TAILORED FOR COMFORT - Adjustable fit with a 21.5-inch circumference ensures a snug, stylish look without compromise.
SHIELD YOUR BRAINPOWER - Advanced EMF & 5G blocking fabric keeps wireless radiation at bay for daily peace of mind.
FEATHERLIGHT BREATHABLE - Soft cotton-nylon blend offers all-day comfort without overheating or bulk.
EFFORTLESS STYLE MAXIMUM DEFENSE - Sleek gray beanie design blends seamlessly with your professional and casual wardrobe.

The DefenderShield EMF Radiation Protection Beanie Cap is a lightweight, breathable headwear designed for adults, featuring advanced shielding technology that blocks 99% of wireless EMF and 5G radiation across 300Hz-10GHz frequencies. With an adjustable 21.5-inch circumference fit and a soft cotton-nylon fabric blend, it offers comfortable, everyday protection against wireless radiation from mobile devices and environmental sources, making it ideal for travel, office, and outdoor use.

Specifications

ASIN	B08KHPM67D
Additional Features	Breathable, Lightweight
Age Range Description	Adult
Apparel Closure Type	Pull-On
Best Sellers Rank	#969,061 in Clothing & Accessories ( See Top 100 in Clothing & Accessories ) #1,868 in Women's Snowboarding Clothing #2,519 in Women's Running Headwear #2,940 in Women's Sports & Recreation Headwear
Brand Name	DefenderShield
Colour	Gray
Customer Reviews	4.0 out of 5 stars 89 Reviews
Fabric Type	Cotton, Nylon
Fit Type	Fitted
Hat Form Type	Beanie
Is Waterproof	false
Item Weight	1.3 Ounces
Manufacturer Part Number	ds-beanie
Material Type	Cotton
Occasion description	Birthday, Christmas
Pattern	Solid
Product Care Instructions	Hand Wash Only
Recommended Uses For Product	Outdoor
Season	Autumn
Style Name	Beanie
Style Number	ds-beanie
Team Name	mit
Theme	Travel
UPC	745809965289
Unit Count	1 Count
Water Resistance Level	Not Water Resistant
character	Sports

Reviews

M**.

It WORKS!!

8.01.2026

T**Q

Great material comfortable and it covers all the necessary areas of the head

10.12.2022

R**E

It works and blocks cell signals

14.01.2021

G**G

Does it work?

25.01.2026

T**E

Does seem to work

15.01.2026

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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