The Jackson Safety Premium Auto Darkening Helmets with Fixed Shade keeps you looking sharp with its bold graphics while performing at your best. Super lightweight and ergonomically balanced, these helmets ensure all-day comfort by reducing stress and fatigue. An extended front increases protection from sparks and slag, keeping you safe. True Color Auto Darkening filter meets 1/1/1/1 Optical Clarity Standard, the highest in the industry. 4 arc sensors provide unsurpassed coverage (2 arc sensors on Gray Matter). They are the ideal choice for welding, grinding, cutting, and carbon arc gouging.The helmets are powered by solar technology and batteries and come complete with Jackson Safetys 370 Speed Dial premium ratcheting headgear, an industry best, which provides quick and easy adjustment. 6 Feet Under helmet has a 1/25,000 seconds switch speed. This Premium Auto Darkening fixed shade helmet is CE certified and meet ANSI Z87.1 and CAN/CSA Z94.3 Standards.