Bolle Silex + Safety Glasses Grey/Black Frame Clear Lens. In order to cover all activities requiring alternating high and low light exposure SILEX+ is available in a Copper version a technology that also effectively fights against blue light. Protection Comfort and... Style SILEX+ is available with new temples colour combinations. Specifications for Bolle Silex + Safety Glasses: Manufacturer: Bolle Size: One Size Age Group: Adults Lens Color: Clear Quantity: 1 Package Contents: Bolle Silex + Safety Glasses Bolle Silex + Safety Spectacles Pc Csp Brown Platinum Pc Tpr Rimless - SILEXPCSP