Sitka Heavyweight Bottom - The Heavyweight Bottom is a foundational next-to-skin baselayer that keeps the lower limbs warm during long periods of frigid inactivity while wicking moisture when on the move, perfect for cold weather days spent in a layout blind, stand or glassing in the backcountry. Heavyweight comfort stretch fleece 93% polyester/7% elastane Polygiene Odor Control technology Moisture wicking Performance fit designed for minimal layering 259.40g Style: 70015