If you've searched for a Faraday bag, you've probably run into Mission Darkness, GoDark, and SLNT — three well-known signal-blocking brands, alongside us. This guide compares real, current prices and specs across all four, sourced directly from each brand's own product pages, so you can see where each one actually stands rather than take anyone's marketing at face value.
Prices and specs below were checked directly against each brand's official site. Competitor pricing can change — always confirm on the brand's own site before buying.
Who's Who
- Mission Darkness (mosequipment.com) — founded 2015, USA-assembled, originally built for digital forensics and law enforcement. Wide catalog from small pouches to forensic enclosures.
- GoDark (godarkbags.com) — a Kickstarter-origin brand focused on rugged, outdoor-styled bags with 600D poly shells.
- SLNT (slnt.com) — the "Silent Pocket" brand, known for a broad lifestyle range (backpacks, wallets, apparel) built around their Multishield® lining.
- The Faraday Bag (us) — signal-blocking bags and leather key-fob pouches, with SGS-certified fireproofing on our core bags.
Phone Faraday Bags: Price Comparison
| Brand | Entry phone bag price | Fireproof stated? | Waterproof stated? |
|---|---|---|---|
| The Faraday Bag | $14.99 | Yes (SGS-certified) | Yes |
| Mission Darkness | $23 (Non-Window Faraday Bag) | Not stated | Not stated |
| SLNT | $44.95 (Waterproof Faraday Phone Bag) | Not stated | Yes |
| GoDark | $60.00 | Not stated | Water & puncture resistant |
At the entry-level phone-bag price point, we're the least expensive of the four, and the only one of the four whose entry bag explicitly states a fireproof rating on the product page.
Key Fob Faraday Bags: Price Comparison
| Brand | Price | Material / format |
|---|---|---|
| Mission Darkness | $15 for a 2-pack (~$7.50 each) | Water-resistant ballistic nylon pouch |
| The Faraday Bag | $15.99 single / $29.99 2-pack | Handcrafted genuine leather pouch |
| SLNT | $21.95 | 500D weatherproof polyester pouch |
| GoDark Vault | $49–$56 | Rigid aluminum case with magnetic hinge (a different product category — a hard case, not a soft pouch) |
Here it's a mixed picture, and we'll say so plainly: Mission Darkness's utility 2-pack is the cheapest per-unit key fob option of the four. Ours sits in the middle, priced for a genuine leather pouch rather than nylon — if bare lowest cost is your only priority, their 2-pack wins on price. If you want leather instead of nylon, ours is built for that.
Shielding Certifications: The Honest Part
This is the section most comparison pages skip, and it matters. Mission Darkness, GoDark, and SLNT each publish a specific, named lab certification for their shielding fabric on their product pages:
- Mission Darkness cites MIL-STD-188-125 and IEEE 299-2006 testing for their TitanRF fabric.
- GoDark cites independent lab testing exceeding 100 dB of attenuation and MIL-STD-188-125-2 compliance.
- SLNT cites MIL-STD-188-125-2 compliance with a stated 100,000:1 signal reduction ratio.
We do not currently have a published, independent RF-attenuation lab report for our signal-blocking fabric, and we're not going to pretend otherwise or invent a number. What we do have is a real, checkable SGS fireproof certification on our core Faraday bags — a different kind of test, for a different kind of protection (heat resistance, not signal attenuation). If an independently lab-verified dB rating for RF shielding is the deciding factor for you, that's a genuine point in the other three brands' favor today, and we'd rather tell you that than dodge the question.
So Which Should You Buy?
- Cheapest phone bag with a fireproof rating: ours, at $14.99.
- Cheapest key fob pouch, no leather preference: Mission Darkness's 2-pack.
- Want a published RF-attenuation lab number specifically: Mission Darkness, GoDark, or SLNT — all three state one; we don't yet.
- Want a leather key-fob pouch instead of nylon or polyester: ours.
- Want a rigid hard-case vault instead of a soft pouch: GoDark's Vault is the only hard case of the four here.
All four brands make signal-blocking products built around the same basic Faraday-cage principle — the differences come down to price, material, and which specific certification each one has bothered to test and publish. Browse our own Faraday bags and key fob pouches to compare against what you've read here.
