Wool is natures best insulator because even when moist, wolo retains moist of its insulating properties. So image the warmth of the 100% Merino wool APEX Wool Base Layer Bottom. Remarkably lightweight, this wool base layer is perfect under your favorite hunting pants or bibs, inside a duck hunting wader or fishing wader as a moisture controlled wader pants or under ski attire. And with the power of anti-microbial scent control, your going to go like a pro in any all day activity. Classic 2 button style fly design. Stay warm, dry and comfortable in your new APEX wool bottom.