KEEP COOL Hot days just got cooler in this ultra-wicking ball cap fortified with advanced, sweat-activated cooling, and a wicking sweatband. Omni-Wick™ Omni-Freeze™ advanced cooling Omni-Freeze ZERO™ sweat-activated super cooling sweatbandHook and loop back adjustment Packable cape This product incorporates an antimicrobial treatment intended to protect the product from bacterial growth. The active biocidal substance is: pyrithione zinc. Uses: Water, Hiking, Urban life Composition   Omni-Freeze™ 145 gsm jersey 92% polyester / 8% elastane