The Golden Gate Bridge/ Marin Endurance hat features original art work of the Golden Gate Bridge view from Chrissy Field that includes the Marin Headlands in the back ground. We have added the California Flag to the endurance hat version as well as a list of trails in the San Francisco Bay and Marin area on the underbill. From boco: The BOCO Endurance hat was co-developed by our pals at San Francisco Running Company that know a thing or two about dirt, ultra running and now hat development. They asked and we executed to come up with a lightweight, stuffable, performance hat that they could use out on the trail forward, backwards or stuffed in a pocket.