More than half of all diving fatalities occur at the surface. Sadly, most divers believe that jacket-style BCs provide proper surface floatation when, in fact, a divers surface position principally relates to their weight distribution. A nearly empty aluminum cylinder will usually float an unconscious diver face-down regardless of the BC worn. However, the Halcyon Trim Weighting Kit promotes heads-up surface airway protection by counteracting the positive tendency of buoyant cylinders. Shifting weight from a diver's waist toward their center, such as with a stainless Halcyon Backplate or trim weight system, facilitates horizontal diver trim and reduces drag Up to five pounds of weight can be attached to your tank with each streamlined trim weight pocket.