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DefenderShield

EMF Radiation Protection Beanie Cap

$34.99 USD
$34.99 USD
Sale Sold out
Shipping calculated at checkout.

A lightweight beanie with a 100% silver fiber inner lining that blocks up to 99% of wireless RF radiation (300 Hz–40 GHz) from reaching your head. Cotton/Nylon/Spandex outer for year-round comfort. Three sizes: Baby, Child, and Adult - the only EMF headwear in the DefenderShield lineup sized for the whole family. Foldable brim for adjustable fit and coverage.

Advanced Wireless Shielding

Lightweight, Fabric-Integrated Protection

  • Frequency Range RF (up to 40 GHz)
  • Performance Versatile Everyday Wireless Protection
  • Flexibility Maximum + stretch
  • Best Application Wearable protection from your WiFi router, cellular signals, hotspot, and even low to mid-band 5G signals. Protects your body instead of a specific device, so can be more versatile for blocking multiple sources of EMF. Great for traveling in EMF-dense public places like airports, malls, coffee shops.
Style
Size
Color: Gray
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Good to know
  The beanie shields the head area it covers from ambient wireless RF radiation. It does not cover the face or neck. The foldable brim lets you adjust how much of your forehead and ears are covered. The 100% silver fiber inner lining is naturally antimicrobial and odor-resistant. This is a different shielding technology than the Ultra Armor® used in DefenderShield’s device cases. For warmer insulation, see the EMF Winter Beanie. For a structured cap with UV protection, see the EMF Baseball Cap.
Description

Head Shielding for Every Age, Every Season

Wireless RF radiation from cell towers, WiFi routers, Bluetooth devices, and 5G infrastructure is ambient and continuous. Every member of the household is exposed - adults, children, and infants. Most EMF headwear comes in a single adult size. This beanie comes in three.

The DefenderShield® EMF Radiation Protection Beanie Cap is lined with 100% silver fiber that blocks up to 99% of wireless RF radiation from 300 Hz to 40 GHz - covering WiFi, Bluetooth, cellular signals, and low- to mid-band 5G frequencies. Available in Baby/Small (~14–17”), Child/Medium (~20–25”), and Adult/Large (~23–28”). The beanie is independently tested for shielding performance.

Lightweight Enough for Year-Round Wear, Flexible Enough to Style Your Way

The outer shell is a Cotton/Nylon/Spandex blend - lightweight, breathable, and soft. Unlike the DefenderShield Winter Beanie (which uses a thicker cotton-acrylic knit for cold-weather insulation), this beanie is designed for year-round wear: indoors, outdoors, during sleep, while traveling, or under another hat for layered shielding.

The foldable brim lets you adjust coverage and style. Fold it up for a casual, low-profile look. Unfold it for maximum forehead and ear coverage. The silver fiber inner lining is naturally antimicrobial and odor-resistant, reducing the need for frequent washing.

Key Features
🛡️ 100% Silver Fiber Lining - Up to 99% RF Blocking (300 Hz–40 GHz)
The inner lining is 100% silver fiber - blocking up to 99% of wireless RF radiation from WiFi, Bluetooth, cellular, and low- to mid-band 5G. The silver fiber covers the entire interior surface of the beanie, shielding the head area it covers. Independently tested. 👶 Three Sizes - Baby, Child, and Adult
The only EMF headwear in the DefenderShield lineup with baby and child sizes. Baby/Small fits ~14–17”, Child/Medium fits ~20–25”, and Adult/Large fits ~23–28”. One product for the whole family. ☀️ Year-Round Lightweight Design
The Cotton/Nylon/Spandex outer is lighter and thinner than the Winter Beanie’s cotton-acrylic knit. Wear it in any season, indoors or out. Layer it under another hat or hood for additional warmth in cold weather without losing shielding coverage. 🧢 Foldable Brim - Adjustable Coverage and Style
Fold the cuff up for a casual look and less forehead coverage. Unfold it or maximum coverage over the forehead and ears. The same beanie adapts to different preferences and occasions. 🧫 Antimicrobial Silver Lining - Resists Odor and Bacteria
The 100% silver fiber lining naturally resists bacteria and odor buildup. The beanie stays fresher longer than standard cotton headwear, reducing the need for frequent washing - especially useful for children and for travel.
How to use

Wearing the Beanie

1. Place the beanie on the head. Ensure the silver fiber lining fully covers the top and sides of the head.

2. Adjust the fold. Fold up for a casual fit or unfold it for more forehead and ear coverage.

3. Wear in any environment. Indoors, outdoors, during sleep, while traveling, or near wireless devices. The beanie can also be layered under a winter hat, hood, or helmet for added warmth without losing shielding coverage.

What the Beanie Covers and What It Does Not

• Covered: top and sides of the head (and forehead/ears depending on depth of fold).

• Not covered: face and neck. For neck coverage, pair with the EMF Protection Wrap Scarf. For eye/face coverage during sleep, add the EMF Protection Sleep Mask.

Sizing for Babies and Children

• The Baby/Small size fits infants and very young children (~14–17” circumference).

• The Child/Medium size fits children approximately ages 4–12 (~20–25” circumference).

• The Adult/Large size fits most adults (~23–28” circumference).

Care Instructions

• Hand wash cold with mild detergent.

• Do not bleach.

• Air dry flat.

• Do not iron or dry clean.

• Gentle care preserves the shielding integrity of the silver fiber lining.

Specifications

Shielding Specifications

Specification

Detail

Shielding Technology

100% Silver fiber inner lining

Shielding Effectiveness

Up to 99% of wireless RF radiation (independently tested)

Frequency Range

300 Hz – 40 GHz

RF Sources Blocked

WiFi · Bluetooth · Cellular · 5G (low/mid-band)

Shielding Coverage

Top and sides of head (adjustable by folding)

Antimicrobial

Yes - 100% silver fiber lining


Material Specifications

Specification

Detail

Outer Layer

Cotton / Nylon / Spandex blend

Inner Lining

100% Silver Fiber

Brim

Foldable - adjustable coverage


Size Chart

Size

Label

Circumference

Weight

Baby/Small

Baby / Infant

~14–17 in

~0.04 lbs

Child/Medium

Child (~4–12)

~20–25 in

~0.09 lbs

Adult/Large

Adult

~23–28 in

~0.09–0.13 lbs


Specification

Detail

HSA / FSA Eligible

Yes - see if you qualify at checkout

Warranty

1-year manufacturer warranty
Video

See how our EMF Protection Beanie fits, feels, and performs in real-world conditions. Watch the video below to learn more.

 

 

COMPARE OPTIONS

DefenderShield Beanie Cap vs. The Alternatives

How the DefenderShield Beanie Cap compares to the Winter Beanie, the Baseball Cap, and a standard beanie with no shielding.

Feature DefenderShield Beanie Cap DefenderShield Winter Beanie DefenderShield Baseball Cap Standard Beanie
RF shielding Up to 99% (300 Hz–40 GHz) Up to 99% Up to 99% (300 Hz–40 GHz) None
Silver content 100% silver fiber lining 42% silver lining 100% silver fiber lining None
Baby/child sizes Baby + child + adult One adult size One adult size Rarely
Season Year-round (lightweight) Cold weather (insulated) Year-round (performance) Varies
Foldable brim Adjustable coverage Pull-on only Fixed brim Varies
UV protection Not UV-rated Not UV-rated Brim + crown No
Antimicrobial Silver fiber Silver fiber Silver interior No
Medical Advisory Board Full board Full board Full board No
Best for Year-round family head shielding (all ages) Cold-weather adult head shielding Year-round adult head + UV shielding No EMF benefit
  • 5 stars: 1 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
Melanie S.

It is more attractive in person and surprisingly cool

FREQUENTLY ASKED QUESTIONS

EMF Radiation Protection Beanie Cap FAQ

Ambient wireless RF radiation from the environment around you. WiFi routers, cell towers, Bluetooth devices, and low- to mid-band 5G infrastructure broadcast RF signals continuously. The 100% silver fiber lining blocks up to 99% of this radiation (300 Hz–40 GHz) from reaching the head area covered by the Beanie.

Baby/Small (~14–17”), Child/Medium (~20–25”), and Adult/Large (~23–28”). This is the only EMF headwear in the DefenderShield lineup with baby and child sizes. The beanie is designed for families who want head shielding for everyone.

This beanie is lighter and designed for year-round wear. The Winter Beanie is thicker and insulated for cold weather. The Beanie Cap uses a Cotton/Nylon/Spandex outer (lightweight and breathable). The Winter Beanie uses a Cotton/Acrylic knit (warmer and heavier). Both have silver shielding linings, but the Beanie Cap has 100% silver fiber while the Winter Beanie has a 42% silver blend. The Beanie Cap also comes in baby and child sizes; the Winter Beanie is one adult size.

The beanie pulls down further over the head. The cap is a structured mid-profile with UV protection. The Baseball Cap provides UV sun protection and has a VELCRO® back. The Beanie Cap offers a foldable cuff for adjustable coverage, comes in baby/child/adult sizes, and is lighter. Choose the cap for sun + RF protection; choose the beanie for maximum head coverage and family sizing.

No - this uses 100% silver fiber designed for wearable comfort. DefenderShield device cases use Ultra Armor or Ultra Armor+®, which are rigid composites for device-level shielding. The beanie uses a flexible silver fiber lining that covers your head comfortably during all-day wear. Both block wireless RF radiation; the materials and applications are different.

The Baby/Small and Child/Medium sizes are designed for younger wearers. The Cotton/Nylon/Spandex outer is soft against sensitive skin, and the silver fiber lining is naturally antimicrobial. As with any headwear for infants, supervise wear and ensure the beanie does not cover the face or interfere with breathing.

Yes - the lightweight profile is designed for layering. Wear the beanie under a winter hat, hood, or helmet for combined warmth and shielding. The thin Cotton/Nylon/Spandex outer does not add bulk under other headwear.

Hand wash cold with mild detergent. Air dry flat. Do not bleach, iron, or dry clean. The antimicrobial silver fiber lining reduces odor, so the beanie needs less frequent washing than standard headwear. Gentle care preserves shielding performance.

COMPLETE YOUR EMF PROTECTION

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Designed by a Telecom Engineer.

DefenderShield was founded by Daniel T. DeBaun, a 30-year veteran of the telecommunications industry. Every product is engineered using shielding principles from military and industrial EMF protection, adapted for consumer devices.

Read the full DefenderShield story

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