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Should you buy an SLNT Faraday bag or a Mission Darkness one? They are the two Faraday bag brands people search for most. Both promise military-standard shielding for your phone, and both cost more than the cheap unbranded pouches. So which one should you buy? We compared what each brand claims, how each one closes, and who each bag suits best. We don’t lab-test bags, so we tell you exactly which claims come from the makers and how to check your own bag at home.
The short answer: buy Mission Darkness if you want the most confidence your phone is fully cut off. Its roll-top closure is hard to get wrong and one size fits even big phones. Buy SLNT if you’ll carry it every day and want something slim and good-looking, including a leather version. Either way, do the call test below the day it arrives.
Which Faraday Bag Do You Need? (Quick Picker)
Picks are based on each maker's published specs. We research products; we do not lab-test them.
SLNT vs Mission Darkness Side by Side
| Mission Darkness | SLNT | |
|---|---|---|
| Shielding (maker claim) | Two layers of TitanRF fabric, signals up to 40 GHz | Multishield lining, more than 100 dB |
| Standards (maker claim) | MIL-STD-188-125 and IEEE 299-2006, test reports on request | MIL-STD-188-125-2 and IEEE 299-2006 (1 to 40 GHz) |
| Closure | Roll the top twice, then Velcro (NeoLok version: magnetic) | Magnetic fold-over flap |
| Outside | Water-resistant ballistic nylon | Weatherproof nylon or top-grain leather |
| Fit | One roomy size (inside 5.5 x 9 in) fits big phones | Sized by phone: Small, Medium, Medium Plus |
| Extras | Serial number, clear ID pocket, 4-packs | Front pocket for cables and keys (outside the shield) |
| Best for | Maximum peace of mind and multi-packs | Everyday carry that looks good |
Both brands list their shielding and standards claims on their product pages. We could not check the test reports ourselves, so treat the numbers as the makers’ claims, and test your own bag.
Mission Darkness: Best for Maximum Peace of Mind
Mission Darkness is made by MOS Equipment, which also sells shielding gear to law enforcement and forensics teams. Its phone bag uses two layers of what it calls TitanRF Faraday fabric inside a water-resistant ballistic nylon shell.
- Why it’s easy to trust: you roll the top over twice and close the Velcro. That double fold is what seals the bag, and it’s hard to do halfway.
- Fits big phones: the inside is about 5.5 by 9 inches, so a Pro Max or Ultra slides in, even in a case.
- Nice touches: each bag has a serial number and a clear pocket for an ID card.
- The trade-off: it’s bulkier than a sleeve, and rolling it takes a few seconds.
Our pick: Mission Darkness Non-Window Faraday Bag for Phones. The most-rated bag from either brand, with thousands of reviews. If you want one bag that just works, start here. Check the current price
Premium: Mission Darkness NeoLok. Same idea with a secure magnetic closure, for people who open and close the bag many times a day. Check the current price
Family value: 4-pack. One for every phone in the house, or a spare for the car. Check the current price
SLNT Faraday Bag: Best for Everyday Carry
An SLNT Faraday bag is built to look like a normal phone accessory. The brand was formerly called Silent Pocket. Its Multishield lining sits inside a weatherproof nylon or top-grain leather sleeve that closes with a magnetic flap.
- Why people love it: it’s slim enough for a jacket pocket or small bag, and the magnet closes with one hand.
- Pick your size: SLNT sells sleeves by phone size. Small fits phones up to about 6.1 inches; larger phones need Medium or Medium Plus. Check your phone size before you order.
- Watch the front pocket: SLNT says the main compartment is the shielded part. The front pocket is for cables and keys, not your phone.
- The trade-off: a magnetic flap is quick, but you need to make sure it’s fully closed every time.
Our pick: SLNT Faraday Phone Sleeve (Medium Plus, nylon). Fits most of today’s big phones and stands up to daily use. Check the current price
Premium: SLNT leather sleeve. Top-grain leather that looks at home in a briefcase or a meeting, with the same shielding idea inside. Worth it if you’ll see it every day. Check the current price
Test Your Bag the Day It Arrives
- Put your phone fully inside the shielded compartment and close it properly: roll twice for Mission Darkness, flap fully down for SLNT.
- Call the phone from another phone.
- If it goes straight to voicemail, the bag is working. If it rings, reseal it and try again. If it still rings, return it.
- Repeat every few months. Faraday fabric can wear at the folds.
Our main guide explains which Faraday bags actually work and why they stop working. Protecting car keys instead? See our Faraday bag for key fob guide. Worried your phone is already being tracked? Start with how to tell if someone is tracking your phone.
Our Verdict
Choose Mission Darkness if you want the surest seal and the most room, or if you’re buying for the whole family. Choose an SLNT Faraday bag if you want a slim sleeve you’ll actually carry every day, or a leather one that looks professional. Both are a big step up from cheap unbranded pouches, which we explain how to avoid in our main guide.
Frequently Asked Questions
Is an SLNT Faraday bag better than Mission Darkness?
Both are well-known brands that claim military-standard shielding. Mission Darkness is the better choice for maximum peace of mind, thanks to its roll-and-seal closure and roomy fit. SLNT is better for everyday carry, with a slim magnetic sleeve and a leather option.
Does an SLNT Faraday bag really work?
SLNT says its sleeves block more than 100 dB across cellular, Wi-Fi, Bluetooth and GPS signals and meet MIL-STD-188-125-2. Like any Faraday bag, it only works when the phone is fully inside the main compartment and the flap is closed. Do a quick call test at home to check yours.
Do Mission Darkness bags block 5G?
Mission Darkness says its phone bag blocks Wi-Fi, Bluetooth, 5G, GPS and RFID signals up to 40 GHz, which covers today’s 5G bands.
Does the SLNT front pocket block signals?
No. SLNT describes the main compartment as the shielded part. The front pocket is for cables, keys and small items you want to reach quickly, so don’t put your phone or key fob there.
How do I test a Faraday bag?
Seal your phone inside, then call it from another phone. If it rings, the bag is not sealed or not working. Our main guide walks through a fuller test.
Sources
- Mission Darkness product listing: TitanRF fabric, 40 GHz, MIL-STD-188-125 and IEEE 299-2006, interior size and closure.
- SLNT product listing: Multishield lining, sizes, materials, shielded main compartment.
- SLNT and retailer listings: 100 dB and MIL-STD-188-125-2 claims.
