The Galvin Green David INSULA hat offers warmth, comfort and thermal regulation. The new David features Insula technology with built-in air chambers which retain body heat without adding unnecessary bulk. It has a unique pattern which ties in with other new additions to the range. (Mathew polo and Dayton neckwarmer) The David is made with BLUESIGN-approved fabrics from recycled plastic fibres. This Galvin Green hat is the perfect styling accessory for on or off the course.