A Secumar 3001 inflation mechanism. Automatic inflation when submerged in water. Manual inflation by pulling lanyard or by oral tube. Lightweight comfort for improved range of motion and ventilation. Includes mesh carry bag. provides minimum of 35 lbs. of buoyance when fully inflated. High tenacity 210 Denier nylon shell. Tri-fold design repacks neatly. USCG Approved Type V Inflatable PFD with Type II performance.