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The victims of flood or drowning often experience hypothermia due to the quick body temperature drop after immersing in water over a long period of time. The worse case may be death.
Heat Tech Lifebuoy adds the material that emit heat in water in the red fabric of the outer and inner side of the lifebuoy, so that the lifebuoy can maintain the body temperature of the underarm and upper body parts, which easily experience temperature drop.
When heat tech lifebuoy absorbs moisture, tiny droplets generate heat.
Thermographs clearly show that heat tech lifebuoy maintains more warmth, more evenly over user's upper body and armpit.
Shih-Sheng Chen Iu-Ru Lai