Design: Dark Filter Shades can be Flipped into 3 positions (up, halfway, down) for best convenience – 2 Top & 2 Bottom Eye Safety Ventilation Holes Prevents Lenses from getting foggy, icy or snowy – Modern-Looking Adjustable Headband Strap secures the glasses onto the head & stretches to fit all sizes. * Uses: Use it when Oxygen-Acetylene Welding, Torching, Soldering, Brazing, Metal Cutting or Sandblasting and all type of industrial work * Welding goggles provide a degree of eye protection while some forms of welding and cutting are being done. They are intended to protect the eyes not only from the heat and optical radiation produced by the welding, such as the intense ultraviolet light produced by an electric arc, but also from sparks or debris.