This unit combines premium ergonomic features with advanced technology to provide the best experience in SCBA wearability available today. The ergonomically designed and optimally balanced AirMaXX backplate is adjustable to fit all body sizes. This works in conjunction with the premium S-swing shoulder pads and swivelling hip belt to distribute weight evenly while increasing freedom of movement. Stress and fatigue are reduced as you perform your job without restrictions. The AirMaXX stays with you even when you are turned upside down.The alpha Single Line pneumatic system integrates warning signal, second connection and gauge in an easily accessible manifold at your shoulder.