Our Tour Shield is an advanced style featuring crystalline frames with co-injected temples. The co-injected temples grip the head firmly keeping the sunglasses dead still during the swing. This style utilizes 6 base, polycarbonate lenses from France that deliver unsurpassed optics and complete protection from harmful ultraviolet light. The Tour Shield's 3 lens series options enable the golfer to adapt to any playing condition. This sunglass is available with prescription insert for golfer's that need vision correction.