Hatland says about the Amundson Sympatex
The Hatland Amundsen Sympatex is a hat with the unique Sympatex characteristics; Waterproof, Windproof and Breathable and Durable. The unique mebrame provides a comfortable hat which fits to your outdoor activities. Don't let wetness or cold stop you. This comfy hat is made of 100% polyamide. Also available in XXL and the hat has earflaps.