Abstract: A releasable buckle is described, made of molded synthetic plastic material and comprising a female part and a male part which snap-engages into a socket defined within the female part by means of a pair of longitudinal resilient arms provided with teeth which lock the buckle by cooperating with respective edges of a pair of lateral through slots formed within the female part. The male part is further provided with a central rigid arm cooperating with guide means of the socket within the female part and adapted to limit, in use, the deflection of the resilient arms. This rigid arm has a length such as to cooperate in an interfering manner when the teeth are in the engaged position within the slots, with resilient means provided upon a bottom wall of the socket of female part.