It is to open or close the bridges of the M shapes depending on selected baby greatly to derive from perambulator that spatial mode is mounted in upper innerland resinite as it and grow to a big baby that carrier to the big young infant of both big baby and as baby's combination carrier is big in middle young infant that the present invention, which is a baby by the device with baby, its placement of foot for inducing a M shapes, it supports the rear portion of infants, and the M chairs of the baby to lower both legs of derivation separate (110) and be formed innerland resinite (100); In order to which the distal end in innerland resinite 100 provides, waist tightening belt 200 is fastened to the waist of user; It is it is characterized in that it includes a; Baby, the space (110) that the bridge of the M shapes for being formed among the lower sides of main body 100 or close space derives from are that the innerland of open and close member 300 is open for resin.
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