Skip to main content
On Amazon in the US, CA, UK, AU and JPWhere to buy
RADIHALT 18 × 18 inch grey blanket held open, showing the cotton face and copper-nickel inner fabric

RADIHALT · Copper-nickel Faraday blanket

RADIHALT EMF Protection Blanket

4.3 · 263 Amazon ratings

A soft cotton face over a flexible copper-nickel conductive textile. Drape it between your laptop, phone or tablet and your lap.

SizeSize guide
Colour Grey

Compact 18 × 18 in · Grey

$18.49

Buy on Amazon.com

Price checked recently on Amazon. Checkout, delivery and returns are handled by Amazon.com.

  • Blocks up to 99% of RF power along the covered path¹
  • Copper-nickel Faraday layer under a 100% cotton face
  • Flexible, foldable and needs no power or pairing
  • Hand wash below 40°C; hang dry cotton side out

¹ A peer-reviewed experiment measured 53 dB at 1.5 GHz on a copper/nickel-coated polyester textile specimen. At a tested frequency, 20 dB and 40 dB mean 99% and 99.99% less RF power transmitted through the tested material. RADIHALT uses a copper/nickel conductive inner layer; real-world results depend on coverage and setup. Cu/Ni textile experiment (Polymers, 2021).

Construction

What is inside a RADIHALT blanket?

Two layers, stitched and bound together. No batteries, no electronics and nothing to charge.

  1. 01Cotton face

    100% cotton outer textile and binding

    The side you touch. Soft, breathable and familiar, so it feels like a throw rather than equipment.

  2. 02Faraday layer

    60% polyester · 32% copper · 8% nickel

    A woven conductive textile that reflects and absorbs radio-frequency energy along the path it covers.

Corner of a RADIHALT blanket folded back to show the copper-nickel Faraday fabric beneath the cotton face

Everyday use

How do you use your RADIHALT?

Man working on a laptop with a RADIHALT blanket draped across his lap

Laptop lap layer

Lay it across your lap and put a suitable hard support above it for the laptop. Keep the laptop's vents and cooling surface clear, then check that wireless connections still work as intended.

Woman using a tablet on a sofa with a RADIHALT blanket over her lap

Desk or phone mat

Use it as a mat when you want a conductive layer between a wireless device and the area underneath. The open sides remain unshielded.

Woman relaxing on a sofa with her phone, a RADIHALT blanket and a sleeping dog

Router-side panel

Position it between a router and a specific area you want to shield. Do not drape fabric over the router, block ventilation, or assume whole-room reduction.

Man working on a laptop on a train with a RADIHALT blanket on his lap

Travel work surface

Fold the blanket for travel and lay it across a suitable desk or lap setup. The larger 36 × 30 inch size covers a wider work area.

Specifications

Full product details

Versioned identity, material and care record for all 4 current variants · DOI: 10.5281/zenodo.22910494

RADIHALT product specifications
ConstructionOne cotton outer layer with one copper-nickel Faraday-fabric inner layer
Material CompositionOuter textile + binding: 100% cotton. Inner Faraday fabric: 60% polyester / 32% copper / 8% nickel.
Shielding PerformanceBlocks up to 99% of RF power along the covered line-of-sight path
Available Variants18 × 18 inches in Grey or Black; 36 × 30 inches in Grey or Black
Product TypePassive, nonpowered consumer textile blanket / mat
Country of OriginChina
Care InstructionsHand wash below 40°C with mild or neutral detergent. Do not machine wash or tumble dry. Hang dry cotton side out; cool iron the cotton side only.
What’s in the Box1 RADIHALT blanket, care instruction card

A peer-reviewed experiment measured 53 dB at 1.5 GHz on a copper/nickel-coated polyester textile specimen. At a tested frequency, 20 dB and 40 dB mean 99% and 99.99% less RF power transmitted through the tested material. RADIHALT uses a copper/nickel conductive inner layer; real-world results depend on coverage and setup. Cu/Ni textile experiment (Polymers, 2021).

Customer reviews

What do owners say?

4.3

263 Amazon ratings

Read all reviews

Ready when you are

Bring it home from your local Amazon.

We send you to RADIHALT on the Amazon store for your country. Checkout, delivery and returns are handled there.

Your Amazon store