A pair of swim goggles include a lens frame body, a lens unit, and buckle devices, characterized in that each of the buckle devices includes: a resilient element, an engaging arm, and at least a button, wherein the resilient element has a first base plate and a second base plate both bending in a same direction and spaced away from each other, the first and second base plates having end portions at opposite ends thereof, the engaging arm having a connecting end and an engaging end opposite the connecting end, the connecting end connected with the first base plate, the engaging end engaged with a head strap after being assembled, the at least a button having a press portion and a linking portion opposite the press portion, the linking portion connected to one of the end portions of the first and second base plates.
