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. Lightweight wicking woven polyester material provides a layer of protection from mother nature on the front and throughout the hat Larger Dry Tech polyester mesh side gussets on the side keep your head cool for the length of your workout. Soft polyester mesh wicking sweatband on the inside to help move sweat away from your head keeping you focused on the trail or road. Adjustable back snap buckle with tuck in pocket for any excess keeping the back of your hat tidy. Pliable stuffable soft billBlack underside of the bill to reduce glare Men’s and women’s sizing Machine Washable