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.
Breathable 3DeFX+ active insulation evaporates moisture while you’re active. Its continuous insulating fibers eliminate the ends that poke through the fabric, allowing us to spec a quieter uncoated fabric, giving you the ideal insulating layer for active hunts.