Halo Headbands perform better than any other headband on the market, guaranteed! Halo Headbands keep sweat and sunscreen out of your eyes and off your glasses while racing, training or working out. All products feature the patented watertight seal that keeps sweat out of your eyes and the non-slip surface keeps the band in place. Its lightweight, durable, abrasion resistant and will not lose shape. The bandannas provide maximum sweat absorption and sun protection along with the SWEAT-BLOCK technology. Even if the band becomes completely saturated, the SWEAT-BLOCK technology redirects the sweat to the sides allowing you to see clearly, all the time. Four-way stretch tops are made to fit smoothly over your head and feel comfortable under any type of helmet. This makes them ideal for sports like cycling, cricket, hockey, lacrosse, go-karting, motor cross, skating and skiing just to name a few. They are also perfect for those that work in helmets and hard hats. The Black, Red and Blue Bandannas have a SPF Rating of 50 and the white has a SPF rating of 35.