The present invention relates to a buggy (10) or collapsible perambulator, comprising a sliding frame which, in the unfolded state, runs in an inclined plane and has a division, in the region of which joints (17, 18) are located, and therefore, upon collapsing, an upper portion (11) of the sliding frame is pivotable in relation to a lower portion (12) of the sliding frame about the approximately horizontal axis (21) of said joints, and furthermore comprising an underframe with wheels, wherein, in the collapsed state, the lower portion and upper portion of the sliding frame and at least parts of the underframe are virtually parallel or are at a flat angle to each other and the buggy assumes a flat, compact state, wherein the two sliding-frame portions which are pivotable in relation to each other each have approximately the shape of a U bar. According to the invention, the suspensions of the front wheels (16) are located on the lower portion (12) of the sliding frame, the suspensions for the rear wheels (15) are located on a rear frame (13) of the underframe, said rear frame having an upper horizontal transverse strut (131) which is accommodated in an articulated sleeve (124) so as to be pivotable about a horizontal axis (22) and is located on the lower portion (12) of the sliding frame.