A band lock (1) comprising a first (2) and a second (3) part, which each comprises partly engagement portions (4, 5) for mutual detachable coupling with each other, partly band coupling portions (8, 9) for cooperation with a band (20, 21) each. The engagement portion (4) of the first part (2) comprises an engagement pin (6) extended in the transversal direction (T), and the engagement portion (5) of the second part (3) comprises a hook element (7), which delimits a seat (S) for the engagement pin (6) which seat extends essentially in a transversal direction (T). With the engagement pin (6) placed in the seat (S), a rotational joint is formed with a rotational axis (A) extending in said transversal direction (T) for allowance of the parts (2, 3) to be restrictedly rotatable in relation to each other around the rotational axis (A). The invention also relates to a child carrying device.
