This BUFF Original Coolnet UV Multifunctional Neckwear - National Geographic Uwe is the next generation of UV sun protection from BUFF®. Uniquely engineered with 100% recycled REPREVE® Performance Microfiber and HeiQ® moisture management technology, lightweight Coolnet UV lifts sweat away from your skin and into the evaporative cooling fabric to keep you cool, dry, and comfortable. Designed with a 4-way seamless ULTRA STRETCH construction that features UPF 50 sun protection and Polygiene® odor control technology, Coolnet UV is awesome protection from the sun's harmful rays so you can stay outside longer.