The present invention is made of a tubular body, the first member having a coupling protrusion on the outer circumferential surface, and a plurality of insertion grooves are inserted into the insertion portion and the coupling protrusion is fitted into the upper and lower sides of the outer circumferential surface, fixed to the lower side A height adjusting bar including a second member formed with a groove; A belt connecting ring formed in an annular shape on an upper outer circumferential surface of the first member and caught by a seat be And an umbrella accommodating portion having an annular locking hawk inserted into and fixed to the fixing groove of the second member, formed on an upper side of the outer circumferential surface thereof, and having an umbrella storage space in which the upper side is opened to insert an umbrella. It is about. According to the present invention, the effect can be provided.
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