This auction is for one pre-owned pair of Silhouette brand Titan series (next generation) rimless eyeglasses. A good optician/optical lab can make the rimless lenses in your prescription either larger or smaller in any dimension you wish and/or different shapes. The only constant is the bridge. This bridge is a very standard 20mm. MSRP over $450. Yours for much less.
Note: As even decent opticians have been known to break frames both new and previously worn, I can not guarantee these frames once new lenses are made for them. This is industry standard.