Cut glare and improve reading comfort. Polarizing lens technology reduces reflective and veiling glare on reading materials and work surfaces by 50 to 80 percent for improved eye comfort. Attractive, space-saving design. Powerful and energy-efficient 27W compact fluorescent bulb provides the equivalent light output of a 150 watt light. Weighted base. Measures 8-1/4in wide, 8in long and 21in high (21 x 20 x 53cm). Lifetime warranty.