The Rob Allen Marseille Weight Belt features a flexible rubber design that adapts to the compression of your diving suit at depth, preventing the buckle from slipping. Its roller buckle incorporates small diameter holes and a pin that flicks 90° on release, minimizing the risk of accidental re-engagement. Engineered for reliability, the buckle releases instantly when needed but remains secure against accidental opening from contact with rocks or boat gunnels, ensuring safety and confidence underwater.