ZLZanthera LabSilver shielding textiles
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EMF T-Shirt (S04/S01) product view 1
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EMF T-Shirt (S04/S01) product view 2
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EMF T-Shirt (S04/S01) product view 3
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EMF T-Shirt (S04/S01) product view 4
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EMF T-Shirt (S04/S01) product view 6

EMF T-Shirt (S04/S01)

A silver-lined base layer engineered to attenuate RF signals across the torso.

Waitlist access

Colour: silver grey

EMF T-Shirt (S04/S01) colour view 1EMF T-Shirt (S04/S01) colour view 2EMF T-Shirt (S04/S01) colour view 3EMF T-Shirt (S04/S01) colour view 4EMF T-Shirt (S04/S01) colour view 5EMF T-Shirt (S04/S01) colour view 6

Size

Prototype fit: regular technical base layer. Final grading confirmed at bulk production.

  • S04 textile system with 60-80 dB (declared material value).
  • Cotton outer construction for skin-facing comfort.
  • Pre-launch candidate pending independent EU lab testing before preorder opening.

The T-shirt is designed as a technical first layer: soft enough for daily wear, but built around a dedicated S04 silver shielding layer across the covered torso area.

Its declared attenuation belongs to the textile under laboratory conditions. Final product claims remain gated by independent EU testing, because fit, coverage, seams, and movement all matter in real use.

The construction pairs a pure silver inner shielding face with a cotton outer architecture so the garment feels familiar while the material system remains measurable.

Textile system

S04

Declared material attenuation

60-80 dB (declared material value)

Launch status

Waitlist open

Lab status

EU testing pending

Technical details

Built as a measurable textile system.

Textile system
S04
Composition
Inner lining: 100% pure silver fiber. Outer: 100% cotton where applicable.
Weight
Approx. 70 g/m² shielding layer
Attenuation
60-80 dB (declared material value)
Construction
Layered construction with silver shielding face and cotton comfort architecture.
Care
Machine wash max 30°C, gentle cycle, inside out. Mild, pH-neutral detergent only. NO bleach, NO fabric softener, NO tumble drying, NO dry cleaning. Iron on low heat on the outer layer only; never iron the silver side. Air dry flat, away from direct sunlight.

Compliance & safety

Restricted-substance checked. Claim-safe by design.

Nickel-Safe

Guaranteed free of nickel-copper alloys (REACH Entry 27 compliant).

Restricted-Substance Tested

Silver fiber reviewed through EU lab testing against restricted substances.

Attenuation

Frequency response by signal family.

Signal familyFrequencyAttenuation
GSM / 3G / 4G0.9 - 1.9 GHz60-80 dB (declared material value)
Wi-Fi2.4 GHz60-80 dB (declared material value)
Wi-Fi 5 GHz / 5G Sub-65 GHz / Sub-660-80 dB (declared material value)

Declared material specs. Pending final independent EU lab testing.

EN: This product is not personal protective equipment (PPE) and has no medical properties. Attenuation values refer to the shielding fabric measured under laboratory conditions; actual exposure reduction depends on garment coverage and fit.

SV: Produkten är inte personlig skyddsutrustning och har inga medicinska egenskaper. Angivna dämpningsvärden avser tyget under laboratorieförhållanden; faktisk exponeringsminskning beror på plaggets täckning och passform.

EMF T-Shirt (S04/S01) storytelling sample image 1

01

A base layer built around the shielding surface.

The garment starts with the S04 silver textile system, then builds the T-shirt around it. The shielding value belongs to the covered material area, so the construction keeps the technical layer central rather than treating it as trim.

EMF T-Shirt (S04/S01) storytelling sample image 2

02

Silver fibre on the inside. Cotton structure on the outside.

The inner shielding face uses pure silver fibre, while the outer architecture is planned around cotton where applicable. The result is a technical layer that reads like a familiar T-shirt, not a rigid panel.

EMF T-Shirt (S04/S01) storytelling sample image 3

03

Designed for everyday torso coverage.

A T-shirt covers one of the largest regular-wear areas on the body. That makes fit, drape, and repeat wear as important as the material value printed on a test sheet.

EMF T-Shirt (S04/S01) storytelling sample image 4

04

No final claims before final testing.

The pre-launch page separates declared textile attenuation from finished-product verification. Independent EU lab testing is the gate before preorder access opens.

Product information

Everything important stays visible before preorder.

Materials+

Inner lining: 100% pure silver fiber. Outer: 100% cotton where applicable.

Size and fit+

Prototype fit: regular technical base layer. Final grading confirmed at bulk production.

Care+

Machine wash max 30°C, gentle cycle, inside out. Mild, pH-neutral detergent only. NO bleach, NO fabric softener, NO tumble drying, NO dry cleaning. Iron on low heat on the outer layer only; never iron the silver side. Air dry flat, away from direct sunlight.

Testing status+

Declared attenuation is a material value. Final independent EU lab testing is required before preorder access opens.

Full specification+

Textile system: S04 Composition: Inner lining: 100% pure silver fiber. Outer: 100% cotton where applicable. Weight: Approx. 70 g/m² shielding layer Attenuation: 60-80 dB (declared material value) Construction: Layered construction with silver shielding face and cotton comfort architecture. Care: Machine wash max 30°C, gentle cycle, inside out. Mild, pH-neutral detergent only. NO bleach, NO fabric softener, NO tumble drying, NO dry cleaning. Iron on low heat on the outer layer only; never iron the silver side. Air dry flat, away from direct sunlight.

Scientific proof

Reports stay attached to the product story.

View EU lab testing archive
EU attenuation lab testPending
EU textile reference reviewAvailable
EU restricted-substance screeningPass
Waitlist members get 48-hour early access and the launch-day EU lab testing summary.