Mission Darkness Dry Shield sleeve review
Mission Darkness Dry Shield Faraday Phone Sleeve
By Tom Calder
Key specs
The maker's figures.
- Made for
- Phones, smartwatches, key fobs
- Inside size (maker)
- 7.5 x 4 x 0.5 in
- Waterproof
- Yes (maker)
- Shielding (maker's claim)
- Dual layers of TitanRF fabric (maker)
The same shielding idea as the basic phone bag, in a waterproof sleeve with a magnetic closure, so it suits a go-bag, a boat or a truck. It's snug at 7.5 by 4 inches inside, which fits most phones but not much else.
- Best for
- A waterproof phone sleeve for a go-bag
- Skip it if
- You want one bag for a phone, keys and cards together
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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
- Waterproof (maker)
- Magnetic closure, quick to open
- Two layers of shielding fabric
Worth knowing
- Snug fit: phone-sized only
- Costs more than the basic bag
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Our review
The Mission Darkness Dry Shield Phone Sleeve is a slim, welded-seam TPU sleeve with a magnetic double roll-top closure and a shielding liner, built for phones, smartwatches and key fobs. This review covers the maker's measurements, closure and care notes, and what to check before you trust a phone to it.
What the maker says it is
Mission Darkness describes the sleeve as total signal isolation: slip a phone inside, roll it shut, and it drops off the grid, with no calls, texts, tracking or remote access. The page lists blocking of cellular and 5G, Wi-Fi at 2.4 and 5 GHz, Bluetooth, GPS, RFID, NFC and radio, and lists it as certified to MIL-STD 188-125 and IEEE 299-2006.
It says the sleeve holds all standard phones plus key fobs, GPS units, smartwatches and transponders. Our Faraday bag comparison puts it beside Mission Darkness's pouches and other brands.
Size
The page gives the internal usable size as 7.5 inches long by 4 inches wide by 0.5 inch deep, and the closed exterior as 8.5 by 4.5 by 0.5 inches. The 0.5-inch depth is the number to check, since a phone in a thick case may be close to it.
The page says the sleeve comes in three sizes sharing the same shell and interior, and that the phone sleeve nests inside the tablet and laptop sleeves for layered shielding. This review is for the phone size, listed as SKU MDFB-DSPS.
Shell and closure
The outer is waterproof 600D and 420D TPU with welded seams, which means there is no stitching for water to seep through. The liner is a high-shielding TitanRF Faraday liner.
The closure is what Mission Darkness calls NeoLok: a double roll-top with a neodymium magnetic seal that it says snaps shut one-handed and holds a watertight, signal-tight seal. The page says there are no zippers to snag and no hook-and-loop to wear out, and it cites a patent, US20210169190A1. The page adds that you can open it just as quickly when you need your device back.
Care notes from the maker
Mission Darkness's usage notes say the Faraday material will degrade with extended water contact or punctures, and not to store wet devices or unprotected sharp objects inside. A second note says to keep the opening clear: any item, such as a cable, that crosses the seal will let signals pass through.
That first note is worth reading twice, because a waterproof shell can give the impression that the whole sleeve tolerates water. The maker's note is about the Faraday material itself, which it says degrades with extended water contact.
What sealing a phone means
The maker says nothing gets out, and a sealed phone is off the network. Ready.gov says Wireless Emergency Alerts are sent to WEA-enabled phones, so a phone in the sleeve will not receive them, and it lists a cell phone with chargers and a backup battery in its kit. Use the sleeve for a spare or a phone you want offline, and keep a battery-powered weather radio for warnings; see our weather radio comparison.
The maker's page does not give a test procedure for a finished sleeve. A simple check is to seal a phone and call it from another phone. Ready.gov's pages that we read for this review do not mention Faraday bags, so the shielding claims here are the maker's.
Who should skip it
Skip it if you want one bag for a phone plus keys, cards and a passport; the maker's non-window phone bag is larger for that. Skip it if you want to read the screen while shielded, since there is no window. And skip it if you only need a pouch for a key fob, where the maker's fob bags are smaller.
A researched review, built from the maker's specs, manual and US listings; facts checked 30 Oct 2026. Sources: Mission Darkness: Dry Shield Phone Sleeve (maker's page); Ready.gov: alerts; Ready.gov: build a kit.
Who shouldn't buy this
Don't buy it if you want one bag for a phone, keys and cards together.
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 The phone bag most people need
Read the review →Best for A laptop, tablet and spare phone together
See the comparison →Questions
What size is the Dry Shield phone sleeve?
Mission Darkness lists an internal usable size of 7.5 by 4 by 0.5 inches, and a closed exterior of 8.5 by 4.5 by 0.5 inches. Check your phone and case against the 0.5-inch depth.
Is it waterproof?
The shell is waterproof 600D and 420D TPU with welded seams. The maker still warns that the shielding liner degrades with extended water contact or punctures, and not to store wet devices inside.
How does the magnetic closure work?
The maker's NeoLok closure pairs a double roll-top with a neodymium magnetic seal. Keep the opening clear, since a cable or other item crossing the seal will let signals pass.
Will I get alerts with a phone inside?
No. The maker says a sealed device goes dark, and Ready.gov says Wireless Emergency Alerts go to WEA-enabled phones. Keep the phone you depend on outside, and use a weather radio for warnings.