MSA SAVOX - This chest-worn protective escape device provides oxygen on demand wherever toxic gases, particles or oxygen deficiency can be imminently present. Ready-to-use, it's small in size and low in weight, making it easy to don, use and carry. Features a double heat-exchanger system to reduce inhalation air temperature to a comfortable level. The device allows quick and economic training of donning and use by simulating the weight and properties of real units.