| 摘要 |
A protective jacket, comprises an inner layer and an outer layer composed of an air-impermeable fabric, a layer of a resilient porous material located between the inner and outer layers, and filtering means, the layers being formed so that when the jacket is fitted on a user's chest and upper part of stomach, during inhaling a pressure in an interior increases and air is pressed through the filtering means to be inhaled by the user.
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