Life-saving clothing is a new type of life-saving appliances, is a protective clothing to reduce body heat loss of people in the water. A life-saving suit made of natural insulating material provides sufficient heat protection to allow the wearer to reduce temperature by less than 2 ℃ after 6 h in a calm flow of water with a 0~2℃ temperature. Life clothes made of unnatural insulating materials should be worn together with warm clothing. It also provides considerable thermal protection, allowing the wearer to reduce temperature by no more than 1 ℃ after 1 h in a calm flow of water with a temperature of 5 ℃. A life preserver protects the wearer's hands from 5 ℃ of water and can still pick up a pencil and write after soaking 1h.
Life-saving clothing as a result of heat preservation, also known as "insulation life clothing", heat preservation clothing is to reduce the wearer in the water body heat loss of protective material. In foreign countries, generally referred to as anti-immersion or anti-exposure clothing.
Heat preservation clothing has good insulation performance. The 83 amendment to the SOLAS Convention, which took effect on July 1, 1986, will enable the wearer to wait for a longer period of time in low temperature water for rescue and to increase the chances of being rescued. According to its provisions: after July 1, 1986, the ship built shall be equipped with the heat preservation life clothing According to the 83 amendment: the ship built before July 1, 1986 shall be equipped with the Heat preservation life-saving clothing and the insulation equipment no later than July 1, 1991. Each open lifeboat is required to be equipped with a minimum of three pieces of insulated life-saving clothing.