Swimming goggles include two eyepieces with a substantially cup-like shape, a bridge element connecting the two eyepieces at the nose, a strap wrap the head, couple the outer ends of each eyepiece and keep the goggles in place when in use, wherein each of the two eyepieces includes at least one polygonal plan shaped flat front lens or wall and a shell wall composed of a set of polygonal plan shaped flat lenses joined to each other, along adjacent contact edges, and with the peripheral edge of the at least one flat front lens or wall to delimit a reduced volume inner chamber, which is completely open towards the rear part of the eyepiece, that is, towards the eye.