The ZG puts the buoyancy over the hips and along the sides of the rib cage where buoyancy is desired.
The air chamber positioning gives the ZG a flat and streamlined profile on the back of the diver.
The small and compact unit will pack nicely along with other gear in a traveling suitcase or dive bag for travel.
ZG is suited for double aluminum 80’s and a wetsuit or small steel cylinders used with dry suits and heavier undergarments.