Ray-Ban Erika Blue-Light Clear is a must-have for those who spend hours in front of the computer screen. These matte havana sunglasses with clear lenses and blue light filters are designed to reduce eye strain and headaches. Featuring a key bridge, these phantos-shaped shades offer optimal coverage while maintaining an iconic look that matches any style. PRODUCT INFORMATION STYLE RB4171 Erika Blue-Light Clear MODEL CODE RB4171 865/SB 54-18 FRAME DETAILS COLOR Tortoise MATERIAL Nylon SQUARE Phantos LENS DETAILS COLOR Clear MATERIAL Polycarbonate TECHNOLOGY Transparent LENS PROTECTION INDEX 0N