Mustang Survival MIT 70 Automatic Inflatable PFD - Azure Review (2026)

What the MIT 70 is

The MIT 70 is Mustang Survival's automatic inflatable PFD, built around the brand's Membrane Inflatable Technology, which the company markets as the smallest automatic inflatable approved in North America. Rather than a belt pack, this model is worn front-entry, vest style, with a buckle closure across the chest, so it sits closer to a traditional life jacket silhouette while still packing flat against the body before inflation. The Azure colorway reviewed here is one of several finishes Mustang Survival offers on this model, alongside red and admiral gray, and the automatic trigger mechanism is the same across the color range. It is rated to a Level 70 buoyancy standard recognized in both Canada and the United States, positioning it for recreational paddling rather than offshore or commercial use.

Automatic inflation and manual backup

The defining feature of this jacket is automatic inflation: a water-soluble bobbin inside the inflator dissolves on contact with water and triggers the CO2 cartridge without any action from the wearer, which is the main reason paddlers choose it over manual-only packs. A manual inflation handle is also built in as a backup, so if the automatic trigger fails to fire or the wearer wants to inflate before full immersion, they can pull the cord directly. This dual system is the primary trade-off point against manual-only PFDs like belt packs: automatic triggers add real peace of mind for unexpected capsizes, but they are also more prone to firing from heavy rain, breaking waves, or spray landing directly on the bobbin, which then requires a full cartridge and bobbin rearm before the jacket is ready again.

Fit and visibility

Because it uses Mustang's membrane construction, the MIT 70 sits noticeably slimmer than a foam paddling vest, with a front-entry buckle design meant for quick donning and doffing rather than pulling a vest over the head. The bladder is built into a high visibility, contrasting fabric so that once inflated, the jacket is easier to spot in a rescue situation than a plain colored shell would be. In the Azure finish, the uninflated shell reads as a muted blue that is comfortable to wear all day over a paddling top, while the bright inflated bladder still gives searchers something to see if the jacket has actually deployed. The universal sizing is meant to fit a broad range of adult body types without needing a separate size chart.

Materials and construction

The outer shell is built from 420D nylon, a fabric weight Mustang Survival uses across several of its inflatable PFD lines for a balance of abrasion resistance and low bulk. The re-arm process is designed to be straightforward, with an easy-access inflator mechanism so that after a deployment, or after swapping in a fresh cartridge for routine maintenance, the wearer does not need specialized tools to get the jacket back in service. Mustang recommends replacement of the CO2 components on a multi-year cycle rather than leaving the original cartridge in place indefinitely, since the propellant and the water-soluble trigger element both have a service life. Buyers should check the cartridge date on arrival and again each season before relying on it.

Who should buy it

This jacket fits paddlers who want the peace of mind of automatic inflation and are willing to pay for it, both in upfront cost and in the recurring price of rearm kits when the cartridge fires from spray, heavy rain, or an actual swim. It is a stronger fit for sea kayakers, open water paddlers, and anyone who paddles alone and wants inflation to happen even if they are knocked unconscious, compared with calm-water SUP or slow river use where a manual belt pack is usually enough. Because the manual backup handle is also present, it still gives the wearer control to inflate early if they see trouble coming rather than waiting on full immersion, which is a meaningful advantage over automatic-only designs on the market.

Frequently asked questions