Step up to the ultimate in fog-free heated lens technology and protection from extreme cold with the 509 Kingpin XL Ignite Goggle. Simply push a button and the lightweight, strap-mounted rechargeable lithium-ion power pack quickly heats the entire inner lens surface to 104°F. Two heating modes and up to 5 hours of power at max temp keeps you clear all day. XL performance means 20% more foam for maximum protection in the coldest, most extreme conditions.