Product Description Lift bags are the proper tool used to raise an object to the surface. A lift bag is a specialty tool that requires additional training through a certified training agency. The OMS lift bags are made with heavy-duty nylon and webbing with durable construction.a 1" webbing attached to bottoma Open Bottom One way valve to prevent gas venting upon reaching the surfacea Over pressure valve (OPV) with manual pull dumpa Color: Orangea Lift handle on top