Designed for the adventure-seeker, the Columbia Bora Bora™ Booney hat features an ultra-sweat-wicking headband and breathable mesh venting to keep you cool on any expedition. With an adjustable chin strap and drawcord for a perfect fit, it's the ideal companion for casual hikes or days spent by the water. 100% Nylon, Omni-Wick Sweatband & Mesh, Adjustable Chin Strap, Adjustable Drawcord & Back Toggle, Suited To: Water, Hiking, Casual, Columbia. Columbia Men's Bora Bora™ Booney in Flint Grey | END. Clothing