The present invention relates to a portable chair, the seat portion that the user can sit; A backrest on which a user can lean on his back; And wing portions provided at both sides of the seat part and the backrest part to connect the seat part and the backrest part and to be folded. The portable folding backrest chair which includes the wing portion is folded in the portable state and the seat portion and the backrest portion are overlapped in the portable state, and the wing portion is unfolded in the use state to open the seat portion and the backrest portion.
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