| 摘要 |
PROBLEM TO BE SOLVED: To provide a child seat reduced in weight and improved in portability, mobility in a vehicle, and storability when not in use. SOLUTION: The child seat has a body 1 having a seat part 2 and a backrest part 3 and placed on a seat 50, with an infant C or the like seated thereon and restrained by use of a seatbelt 40 installed in the vehicle. The seat part 2 and the backrest part 3 are each formed in the shape of an expandable and collapsible bag having a selector valve 5, via which air is fed and exhausted to change the configuration of the bag from an expanded use condition to a contracted non-use condition or vice versa.
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