The immersion suit is designed,manufactured,check and accepted  according to the Solas and the MSC.81(70) of IMO. reference to the standards GB9953-88 AND gb9954-88. have the function fo waterproof,buoyance and heat preservation.equip the whistle and the position indicating light,it is not need to wear  life jacket. It's the special dress use for lifesaving and preservation into the cold water and dicky environment ,at teh same time the wearer can swing.Suitable for the every sailing marine and oil and other ocean project.