As SOLAS requirment,need equipped in marine,boat, offshore as lifesaving against hazard in cold water, provide buoyancy.
Keep person Body temperature don't fall more than 2 degree after 6 hour in 0 degree cold water.
adhere with Marine grade reflective tape can be easier found by resuer ; designed with a pillow that no need additional life jacket to provide buoyancy. Three finger glove to make sure the heat don't loss when in cold water. equipped high quality water proof strong zipper. rubber sole boots soft and comfortable. waist belt with stainless steel D ring, it is strong enough to be attached/lifted/ rescued by helicopter Good performance of heat insulation to elong the survival time in cold water. Conform to SOLAS, CCS/EC Approval