The FRACTEL B-Series "SIREN" Bucket Hat uses Polartec® Power Dry® fabric, the most advanced next-to-skin moisture management fabric on the market. This Cap is also built from 100% recycled yarns, is highly breathable, quick drying and moisture-wicking, making it the ultimate choice for warm-weather headwear.   We've taken the best elements of our Cap & Legionnaire designs to create the ultimate in 360 degree protection.