Jackson Helmet Features: *narrow shell design, lightweight, comfortable *weighs only 13.8 ounces *extended front *withstands radiant heat up to 350 degrees F *comes w/factory installed shade 10 polycarbonate filter plate and cover plates *Available in three models: HSL-100, HSL-1 or HSL-2. The HSL-100 features a 4-1/2" x 5-1/4" fixed front. The HSL-1 features a 2" x 4-1/4" lift front. The HSL-2 features a 2"x 4 1/4" lift front. Each helmet includes the new 270-S headgear considered the most comfortable headgear available. Shadow welding helmets may also be ordered with the 187-S cap adapter (mounting blade kit). Meets ANSI Z87.1+ and CSA Z94.3