Mission Darkness phone bag review
Mission Darkness Non-Window Faraday Bag for Phones
By Tom Calder
Key specs
The maker's figures.
- Made for
- Phones, key fobs, cards, passports
- Inside size (maker)
- 5.5 x 9 in
- Waterproof
- Water-resistant
- Shielding (maker's claim)
- Blocks WiFi, Bluetooth, 5G, GPS, RFID and signals up to 40 GHz; MIL-STD-188-125 and IEEE 299-2006 (maker)
A simple, well-made phone pouch from the brand that publishes the test standards it's checked against. It cuts a phone off from cell, WiFi, Bluetooth and GPS signals, and at 5.5 by 9 inches inside it also takes key fobs, cards and a passport. Test it yourself: put your phone inside, roll the top closed twice and call it. It shouldn't ring.
- Best for
- The phone bag most people need
- Skip it if
- You want to use the phone's screen while it's shielded
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Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- Maker cites MIL-STD-188-125 and IEEE 299-2006 testing
- Fits a phone plus keys and cards
- Thousands of buyer ratings
Worth knowing
- No window: take the phone out to use it
- Water-resistant, not waterproof
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Our review
Mission Darkness's Non-Window Faraday Bag for Phones is a roll-top, Velcro-closed pouch lined with two layers of shielding fabric that the maker says blocks cellular, Wi-Fi, Bluetooth, GPS and RFID signals. This review covers the maker's specifications, its closing instructions, and what sealing a phone means for emergency alerts.
What the maker says it does
Mission Darkness describes the bag as its most popular Faraday bag: put a phone inside and it goes dark, with no tracking, no remote wipe and no signal in or out. Its page lists cellular and 5G, Wi-Fi at 2.4 and 5 GHz, Bluetooth, GPS, RFID, NFC and radio signals, from low MHz to 40 GHz.
The shielding fabric is certified, according to the maker, to MIL-STD 188-125 and IEEE 299-2006, and the page says full test reports are available on request. That is the fabric's certification, so how well a finished bag performs also depends on a clean closure. Our Faraday bag comparison lists the alternatives.
Size and build
The maker's specifications give the usable interior, closed, as 8.5 by 5 inches, and the exterior, open flat, as 8.75 by 9.5 by 0.2 inches. The page says that leaves room for a passport, a key fob, access cards or a second device beside a phone. If another listing gives different dimensions, go by the maker's figures.
It has two layers of TitanRF Faraday Fabric on all interior sides, with dual paired seam construction. The outside is water-resistant ballistic nylon, and each bag carries its own serial number. The page says the products are engineered and assembled in the USA.
Closing it properly
Mission Darkness's instruction is to roll the opening down twice and press the Velcro closed across its full width, with nothing crossing the seal. It warns that a cable, strap or corner of fabric caught in the closure will let signals pass through, and says to avoid punctures and sharp objects and not to enclose a wet device.
The shell is water-resistant and not waterproof. If you want a bag that can take water, the maker's Dry Shield line is built for it; see our reviews of the Dry Shield phone sleeve and the 15-liter tote.
What a sealed phone cannot do
The maker says the shielding works both ways: nothing gets out, and nothing gets in. That includes emergency alerts. Ready.gov says Wireless Emergency Alerts go to WEA-enabled phones in a targeted area, so a phone inside the bag will not get one. Ready.gov's kit list also includes a cell phone with chargers and a backup battery.
So the bag suits a spare phone, a phone you are protecting, or one you want offline on purpose, and a phone you rely on for alerts should stay out of it. A weather radio, covered in our weather radio comparison, gives you warnings without a phone.
Checking yours works
The maker's page does not describe a home test for the finished bag. A simple check is to seal a phone inside as instructed and call it from another phone, and see if it rings; do it again after the bag has been in a go bag for a while. The maker says to keep the opening clear and the fabric free of punctures, so look over the bag for damage first.
None of the Ready.gov pages we read for this review mention Faraday bags, and the protection claims here rest on the maker's page and certifications, not on any government guidance.
Who should skip it
Skip it if you need to see or tap the screen while the phone is shielded: there is no window, so the phone has to come out. Skip it if you need a waterproof bag, since this one is only water-resistant, and skip it if you rely on phone alerts while the phone is inside.
A researched review, built from the maker's specs, manual and US listings; facts checked 30 Oct 2026. Sources: Mission Darkness: Non-Window Faraday Bag for Phones (maker's page); Ready.gov: alerts; Ready.gov: build a kit.
Who shouldn't buy this
Don't buy it if you want to use the phone's screen while it's shielded.
This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the US price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
If this isn’t the one
Best for A waterproof phone sleeve for a go-bag
Read the review →Best for A laptop, tablet and spare phone together
See the comparison →Questions
What signals does the Mission Darkness phone bag block?
Mission Darkness lists cellular and 5G, Wi-Fi at 2.4 and 5 GHz, Bluetooth, GPS, RFID, NFC and radio from low MHz to 40 GHz. It says the fabric is certified to MIL-STD 188-125 and IEEE 299-2006.
How do I close it?
Roll the opening down twice and press the Velcro shut across its full width. The maker warns that a cable, strap or fabric caught in the seal will let signals through.
Is it waterproof?
No. The maker describes the exterior as water-resistant ballistic nylon. It also says not to enclose a wet device. Mission Darkness sells a separate Dry Shield line for waterproof use.
Will I still get emergency alerts?
Not on a phone sealed inside. Ready.gov says Wireless Emergency Alerts are sent to WEA-enabled phones, and the maker says no signal gets in. Keep the phone you rely on outside the bag, or use a weather radio.