Abstract: A buckle is provided which includes a male portion and a female portion. The male portion includes inwardly deformable spring arms with detent protuberances. The detent protuberances engage detent apertures within detent recesses on lateral sides of the female portion. Lateral release guards are formed so as to shield the detent protuberances from being inadvertently depressed thereby releasing the male portion from the female portion. The lateral release guards include two portions meeting at an angle thereby forming a point of flexure. An internal rotatable locking assembly within the female portion can be rotated or a wedge can be slid within a channel so as to prevent the depression of the spring arms thereby locking the male and female portions to each other.