Each single set of goggles is a little different, so that the size particulars of Large glasses frame may not always be available. If you have such knowledge about how to measure the size of glass body then you definitely find the difference in spectacle dimensions. You can see the measurements and marking on the temple of glass, on the nose bridge, and on some kinds of model of optical may found stamp on the ear piece. When markings are differing then sizes of spectacles surely not are the same as other. Depending on the design of the glass you select, most importantly the number of eye size is considered to pay attention on and you will find the appropriate fit. More over the bridge size, temple size and lens height or “B Measurement” (anything is going to be affectionate which over than 25mm), an important part to focus on.