The present invention relates to a protective device to be fixed to the back of the infants not good to use the body, the protective body main body (1) made of a tube that can be injected with air composed of the back portion (2) and the head (3) integrally However, the protective body main body (1) is configured to be curved so as to be in close contact with the back and the fixing straps (4) attached to both sides of the main body 1, the structure is simple and easy to manufacture and the protective equipment can inject air Because it consists of a tube, the infant absorbs the shock by the tube when it falls back, so it can protect the infant and it is a useful design that can be used as a toy when not used as a protective equipment.
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