Frame size is usually defined by lens, bridge and temple width. These values are always displayed in that order, in millimeters. As a reference, you may want to check the size of your current eyewear, by looking at the inside temple. Should you see a fourth number at the end, this refers to lens height (i.e. 54/20/145)
Generic Size: Large
Lens Features: Mirrored Coating, Maximum UV Protection
Frame Type: Rimless
Specifications
Material: Metal (Frame)
Suggested Age: 18 Years and Up
Sizing: Adult General Sizing
Dimensions: 36 millimeter (H) X 128 millimeter (W) X 145 millimeter (L)