Rimless lens shape - Polygon Chap
General info on frame size here
You can specify a custom lens size in the special instruction box when you check out with our shopping cart
Default size for single vision lenses A=49mm B=24mm 
Progressive lens size (resized base on default) A=52mm B=32mm 
Super short corridor progressive lens allows min. B of 28mm. If you like to have shapes smaller than progressive size above, please specify

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