When in doubt, order your typical size. If your measurements are in between those listed in the size chart, pick the larger size.
Wrap measuring tape across the forehead, just above the ears, and around the back of the head or where you normally wear your hat.
Our Wind Resistant Fleece Technology takes a new approach to blocking wind and eliminates the windproof membrane by utilizing a unique bonding technique between the face fabric and fleece backer. This trims weight and resists wind while also having exceptional breathability, stretch and soft next-to-skin feel.