Stahlsac Panama Mesh Backpack: Convienent 103L size, ideal for dive gear, dry pockets, BLUESTAHLSAC PANAMA MESH BACKPACKThe most copied design in scuba diving, Stahlsac Panama Mesh Backpack is the "original" design and features two new high-density foam padded shoulder straps, extra durable polyester mesh, duffel bag handles and our unique zippered..