A buckle arrangement for releasably connecting two parts of an object that includes a post which projects out at right angles from one part, and a ring-shaped body which is connected to the other part and which is received by the post. The ring-shaped body carries latching shoulders which engage with a waist in the post and which can be released from the post by applying pressure against two exposed press keys connected to the latch shoulders. The buckle arrangement can be used between a lateral end-part of an upper edge-region of a carrier pouch in a child-supporting harness and a chest strap included in the harness, or for mutually connecting the ends of a belt belonging to a babysitter.