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The differences that matter.
Compare home shielding by what they measure, how they record, and what they cannot tell you.
← Home shielding buying criteria
| Compare capabilities | BlocSilver Four-Poster EMF Bed Canopy (1.5m Frame) | BlocSilver Four-Poster EMF Bed Canopy (2m Frame) | Luxury Swiss Shield Four-Poster EMF Bed Canopy | Luxury Swiss Shield Suspended EMF-Shielding Canopy | BlocSilver Suspended EMF Bed Canopy (2m) | BlocSilver Dome EMF Bed Canopy | BlocSilver Tent EMF Bed Canopy | Swiss Shield Ventus Tent Travel Bed Canopy | Swiss Shield Naturell Ultra Bed Canopy | Swiss Shield Naturell Bed Canopy and Floor Sheet Combo | Swiss Shield Ventus Bed Canopy | Swiss Shield Daylite Bed Canopy | BlocCanopy EMF Protective Bed Set | BlocCotton 5G EMF Sleeping Bag | Original Swiss Shield EMF Sleeping Bag | YSHIELD Complete EMF Paint Grounding Kit (EU) | YSHIELD Complete EMF Paint Grounding Kit (UK) | YSHIELD DRY54 Special Shielding Paint (powder) | YSHIELD Grounding Tape GSX10 | YSHIELD HSF54 Shielding Paint -- 5.28 US Gallons | YSHIELD HSF54 Special Shielding Paint 5L | BlocCopper EMF Shielding Fabric (112cm) | BlocCotton EMF Protection Fabric (150cm) | BlocSilver EMF Protection Fabric (150cm x 100cm) | BlocWiFi EMF Protection Fabric | FlexiBloc EMF Clothing Fabric (170cm x 100cm) | Swiss Shield Naturell EMF Fabric (250cm x 100cm) |
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| Enclosure type | Free-standing four-poster frame, fully enclosed | Free-standing four-poster frame, fully enclosed | Free-standing four-poster frame — 3 sides open, headboard side closed | Ceiling-suspended, fully enclosed with side-slit access | Ceiling-suspended, box-shaped, fully enclosed, 200cm tall | Ceiling-suspended dome, fully enclosed, one size fits all | Portable pole tent, fully enclosed, under 2kg | Ceiling-mounted, collapsible-hoop canopy, one size (King/Queen) | Ceiling-mounted canopy, fully enclosed | Ceiling-mounted canopy + separate floor shield | Ceiling-mounted canopy, fully enclosed | Ceiling-mounted, sheer mesh canopy, fully enclosed | Bedding (mattress/duvet/pillow covers) — not a surrounding enclosure | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Composition | — | — | — | — | — | — | — | — | — | — | — | — | — | 54% cotton, 46% silver fibre (BlocCotton) | — | — | — | — | — | — | — | Copper + polyester | 46% silver fibre, 54% cotton | 80% nylon, 20% double-coated silver | Nickel, copper and polyester | 44% silver fibre, 35% cotton, 18% nylon, 3% spandex | 82% cotton, 17% copper, 1% silver |
| Materials | — | — | — | — | — | — | — | — | — | — | — | — | — | — | Swiss Shield Ultima (body), New Daylite mesh (face/top) | — | — | — | — | — | — | — | — | — | — | — | — |
| Shielding (manufacturer, TUV-SUD monitored) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | Up to 84dB at 40GHz | — | 44dB / 99.996% shielding effectiveness, single layer | Up to 90dB at 40GHz | — | — | — | — | — | — |
| Contents | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1x Grounding Plate Wall GS3, 1x Grounding Plug GPG, 1x 0.2m Grounding Cable GL | 1x Grounding Plate Wall GS3, 1x Grounding Plug GPG, 1x 0.2m Grounding Cable GL | — | — | — | — | — | — | — | — | — | — |
| Use | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | Connects multiple painted walls/areas into one earth circuit | — | — | — | — | — | — | — | — |
| Attenuation (manufacturer) | 36–56 dB across 10 MHz–40 GHz; 36 dB at 40 GHz | 36–56 dB across 10 MHz–40 GHz; 34–36 dB at 40 GHz | — | 35–60 dB across 10 MHz–3 GHz | 35–60 dB across 10 MHz–3 GHz; 34 dB at 40 GHz | 36–56 dB across 10 MHz–40 GHz; 36 dB at 40 GHz | 34 dB at 40 GHz | 99.995% (47 dB) at 1 GHz; 99% effective up to 10 GHz | 99.99% (40 dB) at 1 GHz; 99% effective up to 10 GHz | 99.99% (40 dB) at 1 GHz; 99% effective up to 10 GHz | 99.995% (47 dB) at 1 GHz; 99% effective up to 10 GHz | 99.6% (24 dB) at 1 GHz; 97% at 3 GHz | 38 dB at 1 GHz (Naturelle); 44 dB at 1 GHz (Ultima) | — | — | — | — | — | — | — | — | 85 dB, 30 MHz-18 GHz | — | 36-56 dB, 10 MHz-40 GHz | — | — | — |
| Attenuation (independently lab-tested) | — | — | 900MHz: 37/41 dB · 1800MHz: 35/38 dB · 2450MHz (WiFi): 34/36 dB · 5800MHz: 27/28 dB (Naturell/Ultima) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Fabric | — | — | — | — | Surface conductivity <1 ohm/inch (manufacturer spec) | — | — | 78% cotton, 20.5% copper, 1.5% silver | 81% cotton, 18% copper/silver, 1% carbon | 82% cotton, 18% copper/silver (insulated, not externally conductive) | 78% cotton, 20.5% copper, 1.5% silver, 79 g/m² | 96% PES (polyester), 4% copper/silver | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Width | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 112cm (44in), continuous length | 150cm, sold per linear metre | — | — | — | — |
| Unit size | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 150cm wide x 100cm long | 137cm wide x 100cm long, continuous length | 170cm wide x 100cm long, continuous length | 250cm wide x 100cm long, continuous length |
| Shielding (manufacturer) | — | — | — | — | — | — | — | — | — | — | — | — | — | Up to 53.8dB | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Closure | — | — | — | — | — | — | — | — | — | — | — | — | — | — | Full-length zip, adjustable coverage | — | — | — | — | — | — | — | — | — | — | — | — |
| Attenuation at 1GHz, 4 sqm/L yield | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 36dB single coat / 41dB double / 46dB triple | — | — | 44dB single coat / 53dB double / 60dB triple | — | — | — | — | — | — |
| Compatible with | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | YSHIELD HSF54 and DRY54 shielding paint | YSHIELD HSF54 and DRY54 shielding paint | — | YSHIELD HSF54 and DRY54 shielding paint | — | — | — | — | — | — | — | — |
| Volume | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5.28 US gallons (~20L), as 4 x 1.32 gal bins | — | — | — | — | — | — | — |
| Sizes | Single, Double, King, Super King, Long Super King — 150cm frame height | Cot through Long Super King — 200cm frame height | Single, Double, King, Super King, Long Super King — 200cm frame height | UK Cot, Single, Small Double, Double, King, Super King — 2m standard height, +1m strap extension optional | UK Single, Small Double, Double, King, Super King | — | Single, Double, King, Super King — 155–165cm height | — | Single, Double, Queen, King, California King — 90in height | Canopy: Single–California King. Floor sheet: 59"×98" up to 98"×98" | Single, Double, Queen, King, California King — 90in height | Single, Double, Queen, King, California King — 90in height | — | — | 240cm x 90cm, or 240cm x 140cm | — | — | — | — | — | — | — | — | — | — | — | — |
| Options | — | — | — | — | — | — | — | — | — | — | — | — | Mattress cover, duvet cover, duvet/mattress/pillow set, single or pair of pillow covers — Single to Super King, custom sizes available | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dimensions | — | — | — | — | — | 1m roof diameter, fits beds up to US King | — | 92"L x 90"W x 90"H; 122in hoop circumference; 444in bottom circumference | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Care | Hand wash only, no detergent, no tumble dry — max 40 washes | Hand wash only, no detergent, no tumble dry — max 40 washes | — | Delicate-cycle washable up to 40 times per care instructions | — | Wash gently without detergent, no tumble dry — max 40 washes | Washable without detergent, no tumble dry — max 40 washes | Gentle machine wash, cold water, no bleach or tumble dry, hang to dry | Gentle machine wash, cold water, no bleach or tumble dry, hang to dry | Hand wash cold or gentle machine cycle, no bleach or dry cleaning, hang to dry | Gentle machine wash, cold water, no bleach or dry cleaning, hang to dry | Hand wash cold, hang to dry — no bleach or dry cleaning | Machine washable up to 40 times without losing shielding effectiveness (manufacturer claim) | Washable up to 40 times | Washable, roughly 40 washes before shielding may need replacing | — | — | — | — | — | — | — | Washable, rated for 40+ washes | Washable on low heat; avoid extreme sun exposure | Do not wash — wipe clean only | — | — |
| Breathable | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | No — built for underfloor, curtain lining and grounding pads | Yes — lightweight cotton twill | — | No — opaque, built for windows, RFID lining and canopy grounding | — | — |
| Best for | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | Sewing shielded clothing — has stretch, unlike most shielding fabric | — |
| Weight | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 69g per square metre |
| Size | — | — | — | — | — | — | — | — | — | — | — | — | — | 150cm wide x 240cm long | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Attenuation at 1GHz, 8 sqm/L yield | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 30dB single coat / 36dB double / 40dB triple | — | — | 39dB single coat / 46dB double / 51dB triple | — | — | — | — | — | — |
| Region | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | EU wiring/plug standard | UK wiring/plug standard | — | — | — | — | — | — | — | — | — | — |
| Coverage | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 860-1,720 sq ft per 5.28 gal (depending on coat thickness) | — | — | — | — | — | — | — |
| Assembly | Screw-free metal frame, approx. 15 minutes | Screw-free metal frame, approx. 15 minutes | Steel frame, no drilling or ceiling fixings, approx. 30 minutes | 8 included ceiling hooks and adjustable straps, approx. 20 minutes | 6–8 included Screwfix ceiling hooks, approx. 30 minutes | Single ceiling hook and hoop | Two crossing poles, no hooks or screws, approx. 10 minutes | Collapsible hoop, connector and adjustable strap, plus 3 hardwood dowels (7–8ft) and mounting hardware, sourced separately | Requires 3 hardwood dowels (7–8ft) plus mounting hardware and string, sourced separately | Requires 3 hardwood dowels (7–8ft) plus mounting hardware and string, sourced separately; installation guide included | Requires 3 hardwood dowels (7–8ft) plus mounting hardware and string, sourced separately | Ceiling-mounted with dowels and mounting hardware; optional floor shield | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Certification | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | OEKO-TEX Standard 100 Class 1 (manufacturer) |
| Conductivity | — | — | — | — | — | — | — | — | — | — | — | — | — | Conductive fabric -- manufacturer says no separate earthing mat needed | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Ingredients | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | Natural graphite, carbon black, acrylics powder -- no preservative agent | — | — | Water, natural graphite, carbon black, acrylics dispersion -- no graphene/nanomaterials | — | — | — | — | — | — |
| Grounding | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | Required for low-frequency shielding -- see YSHIELD Grounding Kit | — | Required, licensed electrician -- no UL/CSA listing | Required for low-frequency shielding -- see YSHIELD Grounding Kit | — | — | — | — | — | — |
| Warranty | — | — | Two-year like-for-like replacement, excludes misuse | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Starting price | £899.99 | £1,199.99 | £1,899.99 | £1,899.99 | £799.99 | £1,299.99 | £1,199.99 | $2,043.60 | $2,208.99 | $1,926.13 | $2,068.81 | $1,592.21 | £120.00 | £499.99 | £599.99 | £49.99 | £49.99 | £79.99 | £14.99 | $920.00 | £187.50 | £24.99 | £119.99 | £79.99 | £29.99 | £159.99 | £119.99 |
| Available from | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | Safe Living Technologies (retailer) | Safe Living Technologies (retailer) | Safe Living Technologies (retailer) | Safe Living Technologies (retailer) | Safe Living Technologies (retailer) | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | Safe Living Technologies | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK | EMF Protection UK |
| Limitations | Manufacturer-published attenuation figures — not independently verified. Full shielding depends on pairing with a compatible bed mat and grounding kit (sold separately). Fabric can discolour over time and is hand-washable only, without detergent, up to 40 times. | Manufacturer-published attenuation figures — not independently verified. Full shielding depends on pairing with a compatible bed mat and grounding kit (sold separately). Fabric can discolour over time and is hand-washable only, without detergent, up to 40 times. | Only the headboard side is enclosed — the other three sides are open, so it shields differently than a fully-enclosed canopy. No grounding required. Two-year replacement warranty excludes damage from misuse. | Coverage is published as 10 MHz-3 GHz — it is not tested to the 40 GHz mmWave range that the BlocSilver and Swiss Shield four-poster models publish. Needs 8 ceiling hooks and roughly 20 minutes to install. Two-year replacement warranty excludes misuse or improper washing; 30-day returns available. | Requires 6-8 ceiling hooks and about 30 minutes to install. Needs under-bed protection if used above ground level; a basic grounding kit is included. | Dome shape can restrict airflow. Needs pairing with a bed mat and grounding kit for full effect; under-bed protection recommended above ground level. Two-year warranty covers manufacturing defects only. | Grounding is described by the manufacturer as essential for full effect; a basic grounding kit is only included at full price. Fabric can discolour over time and is washable, without detergent, up to 40 times. Two-year warranty excludes damage from misuse. | Still requires three 7-8 foot hardwood dowels, mounting hardware and string for ceiling mounting despite the "travel" name — it is not a fully self-supporting tent. Not externally conductive — no grounding needed, but manufacturer recommends an RF measurement before and after installation. Manufacturer-published shielding figures are not independently verified. | Requires three 7-8 foot hardwood dowels, mounting hardware and suspension string, sourced separately — not included. Dense fabric can trap heat; some buyers report needing a fan. Manufacturer-published shielding figures are not independently verified. Hand/gentle-cycle wash only, no bleach or tumble dry. | Requires three 7-8 foot hardwood dowels, mounting hardware and suspension string, sourced separately. Manufacturer recommends de-energizing nearby wiring and verifying with an AC electric field meter after install. Manufacturer-published shielding figures are not independently verified. | Requires three 7-8 foot hardwood dowels, mounting hardware and string, sourced separately. Not externally conductive — no grounding needed. A floor shield is recommended if there is occupied space below the bed. Some buyers note a slight fabric odor at first. Manufacturer-published shielding figures are not independently verified. | Meaningfully less attenuation than the Naturell or Ventus fabrics (24 dB vs 40-47 dB at 1 GHz) — a trade-off for its lighter, sheer feel. Only hand-wash care instructions are given (no machine-wash option listed). Some sizes ship in 3-7 business days. Manufacturer-published shielding figures are not independently verified. | This is bedding, not an enclosure — it shields from below and around the body rather than fully surrounding it like a canopy. The single listing covers several cover types, fabrics and sizes; the price shown here is the lowest available combination (a single pillow cover). | Manufacturer-published shielding (up to 53.8dB) is not independently verified by EMF Practical. Washable up to 40 times before shielding effectiveness may decline -- not intended for permanent daily/home use. No face covering included; a separate BlocSilver fabric panel is needed if you want your face shielded too. | Manufacturer-published shielding claims and washability (up to roughly 40 washes before replacement is recommended) are not independently verified by EMF Practical. The manufacturer itself frames this as a travel product rather than a permanent home solution, given the wash-count limit. EMF Practical is not a medical resource -- anyone with EMF-sensitivity health concerns should also speak with a healthcare professional. | This kit only supplies the grounding hardware -- fitting and connecting it correctly is an electrical job, and the manufacturer recommends a qualified electrician handle it. | This kit only supplies the grounding hardware -- fitting and connecting it correctly is an electrical job, and the manufacturer recommends a qualified electrician handle it. | Attenuation figures (up to 84dB at 40GHz; see spec rows) are manufacturer-published and TUV-SUD monitored to the same ASTM/IEEE standards as HSF54, but run somewhat lower than HSF54 at the same yield -- check the attenuation rows if you need a specific dB target. Must be earthed to shield low-frequency fields; the manufacturer recommends a qualified electrician handle the grounding connection. | Intended to extend or connect an existing grounded paint installation, not to replace a grounding kit entirely -- check coverage per roll before ordering multiples for a large project. | Attenuation (44dB / 99.996% shielding effectiveness, single layer) and coverage (860-1,720 sq ft per 5.28 gal, depending on coat thickness) are manufacturer-published, TUV-SUD monitored figures -- not independently re-tested by EMF Practical. Like all conductive shielding paint, this must be grounded by a licensed electrician to shield low-frequency electric fields, and the manufacturer notes it carries no UL or CSA listing, so some electrical inspectors may want an engineer to certify the installation -- check with your local inspector before a large project. | Attenuation figures (up to 90dB at 40GHz; see spec rows for the layer/yield breakdown) are manufacturer-published and TUV-SUD monitored, using recognised test standards -- stronger evidence than most shielding claims EMF Practical sees, but still not independently re-tested by EMF Practical itself. Low-frequency shielding only works once the painted surface is properly earthed -- the manufacturer recommends a qualified electrician handle the grounding connection. | Manufacturer-published attenuation (85 dB, 30 MHz-18 GHz) is not independently verified. Not breathable, so unsuitable for clothing or direct skin contact. Sold by the metre in a continuous length — order the full length you need in one purchase. | Manufacturer states 40+ washes before shielding performance degrades — hand or gentle machine wash is typically required, check the current care label. Composition and attenuation figures are manufacturer-published, not independently tested. | Manufacturer-published attenuation (36-56 dB, 10 MHz-40 GHz) is not independently verified. Silver-coated fabric degrades faster under strong direct sunlight. Washable on low heat only. | Not washable — the manufacturer recommends wiping it down rather than laundering it, to preserve shielding performance. Not breathable or see-through, so it suits windows and enclosures rather than skin contact. Sold by the metre in a continuous length. | Manufacturer states this fabric has been independently tested, but EMF Practical has not reviewed that test data directly. Sold by the metre in a continuous length; plan pattern pieces before ordering. | Manufacturer-published composition and OEKO-TEX certification are not independently re-verified by EMF Practical. Washable, but check the current manufacturer care instructions before the first wash. |
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Specification comparison, not a hands-on review. Current prices, shipping and returns must be confirmed with the provider.