What is lens size, base, temple length, distance, lens depth?

Those are measurements for the sunglass frame found below each item under the product description. All are in millimeters. 

Lens size is the width of the lens. 

Base is the curvature of the lens. 8 has the most curve, meaning it will wrap around more. 

Temple length is the length of the arm from where it is attached to the frame to the tip, those extend back behind the ear. 

Distance is the width of the bridge (between the lenses).

Lens depth is the height of the lens, top to bottom.