According to the international convention for the safety of life at sea,All the seamen must wear the immersion suit or lifejacket when  at sea.

we can supply two kinds of immersion suit as follows:

                  MATERIAL                         

DBF-I,       FOAMED POLYETHYLENE

DBF-II          PVC  

Both buoyancy is more than 142kn,they can be fitted with 3M reflection strip,sea water  light or lithium light for your choice.