The belt and knife.

If we dress the diver we will always use a belt and knife. The belt will be pulled firmly around the waist of the diver. This is to prevent that, if the diver lays down on his stomach, the air will float to the whole top site of the suit. If that is possible the air in the legs can pull the diver up side down. It is a spectecular view but not many divers like it…. So if a diver wears a belt he can lay down safely. The air will stay in the top part of the body.