Characteristics:This product complies with relevant requirements of 1996 Amendment to the International Convention for the Safety of Life at Sea,1974 and the International Life-saving Appliance Code.It is accredited by CCS certificate issued by China Classification Society. Main specification:1)Material: compound cloth-vacuum aluminum plated& nylon cloth; 2)Thermal conductance:<7800W/m2 k;3)Watertightness: able to stand 2m hydrostatic pressure