Description Microfibre 1 Layer Hat Buff® is a light hat to be used in any time of the year, for many outdoor activities like bouldering, climbing, trekking, running, or biking and the Hat BUFF will protect you from cold for high intensity activities.  Features High-stretch hat made from of one layer of 100% Polyester microfibre.   Featuring a patterned and transfer BUFF logo,   Dries quickly and offers excellent humidity control.   Treated with Polygiene your hat will remain fresh as the silver ions prevent the build up of bacteria in the fabric   Thermal Comfort – Cool Buff 1-Layer Hat - Ciron