The Chill-Its 8939 Cooling Bucket Hat features a performance evaporative cooling material that provides immediate cooling relief when worn wet and wicks sweat and moisture when worn dry. Designed with a polyester-spandex blend, this cooling sun hat is flexible, easily folds up for storage and offers a comfortable and stretchable fit. The wide brim and UPF 50+ treatment offers face, ear, and neck protection from harmful UV rays and an anti-odor treatment makes for fresh all-day wear. One size fits most, this cooling hat features a back-of-hat cinch cord for an adjustable fit. Soak the bucket hat in water until saturated, wring out excess water and wave to activate with airflow-the evaporative cooling process begins instantly and lasts for hours when worn in environments with suitable airflow. If worn dry, the moisture-wicking fabric draws perspiration away to keep you dry. To reactivate, simply rewet. Ideal for construction, landscaping, roofing or anyone working in the heat.