| Tennis Bolle Sunglass - Upshot Collection - Medium / Large |
Way above ordinary eyewear, Bolle delivers the highest quality sunglasses for performance and protection. Since 1888, Bolle has crafted premium sports eyewear, sunglasses and safety glasses from the finest lens and frame materials at their own factory.
Bolle Lens Technology: Competivision lenses is the first and only lens technology created specifically for the sport of tennis. This patented, award-winning, teal colored lens is designed to mute all colors except for optic yellow, which allows the tennis player to more readily see the tennis ball against the muted background colors. Eyewear most chosen by tennis teachers and players. Includes flash metallic silver mirror, cuts the harsh glare on the court in bright light conditions. Transmits approximately 22% of visible light. Bolle's
Competivision lens is so effective, its' the officials eyewear of the U.S. Proffesional tennis Association.
Bolle Frame Technology: Bolle's frames are built with proprietary hydrated nylon which is the industry's most durable material, the frame manufacturing process injects molten metal alloys into custom molds for precise frame styling and design. This process is also used for state-of-the-art machine-stamped and hand-finished frames. The frames include rubber nose pads and temples tips to provide ultimate comfort and security during active use. Bolle spring hinges and integrated spring hinges are designed to apply the right amount of tension on your temples, so the frame sits securely and comfortably on your face.
What Makes Bolle Special? Need To Know Facts Features: 
Example: 58/33/60/20/130
* The first number refers to the width of one lens. Generally speaking, frames in the 48 - 53 width range are
considered youth sizes (or for small adults), 54 - 58 is considered medium, and over 59 is considered large. However for wrap-around
lenses like Parole and Vigilante, due to the longer width needed to wrap around, the size range start from 71 for small/medium to over 75 for large.
* The second number refers to the top-to-bottom measurement of one lens.
* The third number is the effective diameter of lens, fourth number refers to distance between the right lens and left lens. The fifth represents Temple Length.