Whether youre working out, exercising, competing, racing, or work... the "Halo Headband" will keep you sweat out of your eyes, no matter where you sweat a lot. The soft "sweat block seal" on the halo headband prevents sweat and sunscreen from entering your eyes, eyeglasses and sunglasses. Great for sports with both hands such as cyclists, runners, golf, lacrosse, tennis, and more. It is also great for work sites such as the US military, medical, construction, and paints. (US Patented 6,567,991)