100% polyester buckle closure High-quality materials: premium polyester fabric. It not only provides UPF 50 sunburn protection in outdoor activities, but also great precaution in rainy days. 360 Protection: Comes with face and neck flap, full protection from the blazing sun. The extra wide brim provides a wider shade but doesn't block the view. Multifunctional: detachable top and flaps. Provides multiple wearing options to suit different needs. Lightweight design, easy to carry. Perfect for all kinds of outdoor activities such as hiking, gardening, fishing. Best Design: Drawstring design to keep the hat in position in strong wind or heavy rain. Buckle button for quick release and application.