Fastener suitable for swimming goggles

The invention discloses a fastener suitable for swimming goggles. The fastener comprises a side buckle, a roller, a packing base and a head band. A hollow column body used for sleeving the roller is integrally formed at the end of the head band. The side buckle comprises a top wall, a bottom wall, a first side wall and a second side wall. A square hole is formed in the middle of the side buckle. A retaining wall is arranged at the edge, close to the first side wall, of the square hole. A pair of installing grooves and a pair of connecting grooves are formed in the vertical corresponding positions of the top wall and the bottom wall of the side buckle. The packing base is connected into the installing grooves in a rotating mode. The fastener has the advantages that the fastener is suitable for the swimming goggles, and a wearer can adjust tightness of the head band conveniently and fast with one hand by moving the side buckle front and back; in the adjusting process, pull generated by the fastener acts on the packing base, the packing base can rotate within a certain angle, and under the pull effect of the head band, the packing base presses the portion, at the retaining wall, of the head band based on the lever principle to generate the slip stopping effect and ensure that the head band can not slip.