Dakura - Black/Clear Lens. The Dakura's traditional wrap-around frame style is perfect for those who want tighter, smaller eyewear that looks great and is safety rated for work or play. Its flexible and durable black frame is equipped with soft thermoplastic rubber temple arms to create a comfortable, nonslip fit. Clear lenses are the classic option for safety. With pristine clarity, they are an excellent choice for indoor and low light conditions. 85% of visible light passes through this lens color.