This is the Mustang Survival Corp Inflatable PFD with HIT Auto Hydrostatic Inflator Technology Features: Front entry with buckle for convenient donning and doffing Durable Nylon outer shell with reflective accents Neoprene Comfort Collar prevents chaffing SecureZip closure stays shut in high winds and still opens easily on inflation Indicator window to check status (green means it&';s ready to go) Hydrostatic Inflator Technology (HIT) only inflates when submerged in 4" or more of water pressure (not in rain, spray, or high humidity) Manual inflation handle allows you to inflate the vest at any time Oral inflation tube for backup Water-resistant pocket holds essentials Includes safety whistle for emergencies SOLAS reflective tape on inflation cell enhances visibility in low light conditions Holder for a strobe light Provides 38 LBS of buoyancy when inflated USCG - Recreational Type II (Meets minimum buoyancy rating of 33.7 LBS), Commercial Type V (Type II performance approved only when worn) Compatible with the 1.5" Buckle Belt Extender (model #MA7637) Compatible with Re-arm Kit C (Model # MA7214) This front entry PFD automatically inflates when submerged in 4" or more water pressure, not when hit with rain, spray, or humidity, making it ideal for severe marine environments. The 500D CorduraA(R) 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 oral tube to inflate the PFD at any time. The water-resistant pocket secures and protects your essentials. A whistle, strobe light holder, and SOLAR reflective tape all ensure additional on-the-water safety. When inflated, the HIT Hydrostatic Inflatable PFD provides 38 lbs of buoyancy.