Features: 3-position slider adjust distance of the lines from your eyes for precise vision Crown Strap Adjustment - allows the headgear to be raised or lowered for maximum comfort and performance Lock Nut feature keeps the components together even...
Features: 3-position slider adjust distance of the lines from your eyes for precise vision Crown Strap Adjustment - allows the headgear to be raised or lowered for maximum comfort and performance Lock Nut feature keeps the components together even...