The 3M™ Adflo™ Powered Air Purifying Respirator (PAPR) and 3M™ Speedglas™ Welding Helmets provide fresh, filtered air around the head and face. The 3M™ Speedglas™ ADF (Auto Darkening Filter) Welding Filters, with variable dark shades, automatically detects light and adjusts in real time to allow the welder to concentrate on the job at hand. The 3M™ Adflo™ and 3M™ Speedglas™ range of respirators and helmets are slim, lightweight and ideal for all types of Tack and Arc Welding.