FLOAT 42 WITH FLOAT 2.0 - For pros, ski patrollers, guides, and those prepared for long days or overnights. The refillable Float compressed air cylinder is the power and driving force behind our Float system. When the Float trigger is pulled, it activates the release of 3,000 psi (207 bar) of compressed air, inflating the airbag. Always make sure your cylinder is full and connected correctly before heading out. (Cylinder must be ordered separately. It isn't included with backpack.)