3M™ Speedglas™ Sweatbands are hygienic replacement parts designed for 3M™ Speedglas™ Welding Helmets.3M™ Speedglas™ Sweatbands are hygienic replacement parts designed for 3M™ Speedglas™ Welding Helmets. Replace when worn or unhygienic. Available in leather, towelling or fleece. Replaces worn or damaged parts. Helps ensure you get the correct level of co