You can"t stop Ironman, you can only hope to contain him. The Headsweats Super Visor stops sweat from getting into your eyes, that"s why it is the most popular visor in the high-performance world of triathlons - it gets the job done. The Super Visor remains the trusted companion of thousands of Ironman finishers because the Super Visor is durable, lightweight and keeps you dry.