Mustang Inflatable H.I.T Automatic - MD3153-02This front entry PFD automatically inflates when submerged in 4 inches or more water pressure, not when hit with rain, spray, or humidity, making it ideal for severe marine environments. The 500D Cordura outer shell is durable, and the neoprene collar provides all day comfort. The SecureZip stays closed during high winds but opens easily on inflation. A convenient window lets you check the indicator status, and you can also use the manual handle or