Swimming goggles have a left frame, a right frame, lenses received in the left frame and the right frame, and a strap device. The strap device includes buckles respectively assembled on the left frame and the right frame, and a head strap extending through the buckles and defining a plurality of stop-grooves therein. Each buckle includes a connecting base, a peg locking with the connecting base, and a pressing member. The connecting base defines an opening therein, a guiding post being formed on a side of the opening for movably receiving the head strap. An engaging wall is formed on the connecting base, and an engaging arm is formed on the engaging wall for assembling to the left frame and the right frame. A block is formed on the pressing member and extends through the opening when assembled.

A pair of swimming goggles, includes a left and a right goggle frame, wherein a connection bridge connected therebetween, a pair of buckles respectively attached to the left and the right goggle frames, and a head strap adjustably fastened to the buckles. Each buckle includes a base, a cover, a shaft and a fastener, wherein the fastener includes a handle and an engagement protrusion. a tongue integrally extends from a side of the handle and can be leaned against the left and the right goggle frame after assembly. When the swimming goggles is worn on a user's head, it is very convenient to use the swimming goggles of the present invention whenever one needs adjusting an appropriate wearing position.

A side buckle structure of swimming goggles includes a side buckle casing, a press-button seat, a press button, and a head strap. The side buckle casing has a press-button hole, and the press-button seat has a latching hook, a strap hole, placing holes, and elastic devices. Rotating axes, a pressing piece, and a supporting piece are contained in the press button, which is installed on the press-button seat and then inserted into the side buckle casing. According to the aforementioned structure, the side buckle structure is easy to assemble, difficult to dismantle, and very convenient to adjust in usage.

Swim goggles comprising first and second substantially rigid frames each having a base portion, an eye lens portion, an inner end portion and an outer end portion. The swim goggles further comprise a bridge for engaging the inner end portions of the first and second frames. The swim goggles further comprise a head strap having first and second end portions having a plurality of tooth portions. The swim goggles further comprise first and second connection mechanisms disposed at the outer end portions of the first and second frames, respectively. Each of the first and second connection mechanisms comprise a strap passage way adapted to receive the first and second end portions of the head strap, respectively. Each of the first and second mechanisms further comprise a unitary resilient pawl comprising a median portion and first and second finger portions having end portions engaged with the base portion at a position adjacent to and below the eye lens portion. The resilient pawl further comprising a button portion extending upwardly from the median portion and a stop portion extending downwardly from the median portion. Each of the first and second connection mechanisms further comprise a cover portion engaged with the base portion and the end portions of said first and second finger portions, respectively. The cover portion has an annular shaped opening adapted to receive the button portion. In operation, movement of the button portion by the person causes the first and second finger portions to become biased and the stop member to become disengaged from the tooth portion of the strap. Release of the button portion causes the stop member to return to its unbiased state and engaged with the tooth portion of the strap.