Totally Enclosed Air Lift Bags can be used for supporting static loads in shallow water and on the surface, pontoons for bridges, floating platforms, dock gates and military equipment. Totally enclosed lifting bags offer an invaluable method of reducing the draught of vessel and lightening underwater structures. Then also provide an ideal form of buoyancy for cable or pipeline float-out operations and river crossings. DooFlex Totally Enclosed Type lift bags are cylindrical shaped units, fabricated from heavy duty polyester cloth coated with P.V.C ( Made in Germany) , completely equipped including the appropriate quantity of automatic air relief valves, certified heavy duty load restrain harness of polyester webbing with shackles, and air inlet ball valves.