The Outdoor Research Radar Visor keeps the blazing sun from cooking your noggin like a hard-boiled egg. It's a favorite of river guides, trail runners, and thru-hikers seeking extra protection from the sun, but with the rapid cooling of an open-style visor. Supplex nylon blocks harsh UV rays while retaining a lightweight, breathable feel during outdoor use. The moisture-wicking headband promotes evaportive cooling as you sweat, making this visor ideally suited for fast-moving activities. Another cool feature, the foldable brim facilitates easy-stashing convenience in your backpack or cargo pocket.