Keep cool in the heat while protecting your skin from damaging UV rays. Featuring Columbias exclusive Omni-Freezetechnology, the Freezer Zero neck gaiter is sweat-activated so you stay cool in the heat while regulating your core temperature. Constructed with built-in UPF 50 protection to seal out harmful UV rays, this gaiter is perfect for long days fishing or boating. Imported. Key Features Omni-Shade technology provides UPF 50 sun protection Omni-Freeze sweat-activated technology keeps you nice and cool Gaiter stays cool as you get warmer