The Pinnacle is packed with features like a specially designed EPIRB/GPS pocket and expanding cargo pockets. The rear hydration pocket is also an expanding zipper-less design. Ultra has added a front zip for easy fitting and included multiple side adjusters for added security. The shoulder design is adjustable with neoprene allowing the whole unit to flex and move. The Pinnacle Series III has a stable buoyancy design with over 6kg of upward thrust. Features: Heavy duty 25mm belts Reinforced and bartacked stress points Hydration pack pouch Expanding cargo pockets Offset front entry Lanyard attachment point