The UV Buff® is made from Coolmax® Extreme fabric to block 95% of UV rays* and wick sweat quickly away from your skin with its four-channel fiber. Ultimately designed to keep you comfortable and protected hour after hour on long, sun-filled adventures. Blocks 95% of UV rays Soft, breathable Coolmax® Extreme fabric 100% seamless 12+ ways to wear Polygiene® active odor control Moisture wicking and Quick-drying Thermal Protection from cold & wind One-size-fits-all adults