Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

What is the circumference of the medium size beanie please?

Accepted Answer

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

Question 4

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?

Accepted Answer

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.

ASIN	B08KHPM67D
ASIN	B0GZJ8BPGW
Additional Features	Lightweight
Age Range Description	Adult
Apparel Closure Type	Pull-On
Apparel Fabric Stretch	Medium Stretch
Apparel Fabric Weight Class	Lightweight
Best Sellers Rank	#1,047,759 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #2,913 in Men's Skullies & Beanies
Brand Name	DefenderShield
Color	Grey
Customer Reviews	3.9 3.9 out of 5 stars (174)
Date First Available	May 4, 2026
Fabric Type	Cotton, Nylon
Fit Type	Fitted
Fit to Size Sentiment	Positive
Hat Form Type	Beanie
Is Waterproof	false
Item Type Name	Beanie Hat
Item Weight	1.3 Ounces
Manufacturer	DefenderShield
Manufacturer Part Number	ds-beanie
Material Type	Cotton Blend
Occasion Type	Birthday
Pattern	Solid
Pattern Style	Solid
Product Care Instructions	Hand Wash Only
Recommended Uses For Product	Outdoor
Seasons	Fall
Style Name	Adult/Large
Style Number	ds-beanie
Theme	Travel
UPC	745809965289
Unit Count	1 Count
Water Resistance Level	Not Water Resistant
character	Sports

DefenderShield EMF Radiation Blocking Beanie Cap - Blocks Wireless Radiation

Description

Specifications

Common Questions