Sitka Gear Heavy Weight Pants, Optifade Elevated II, Medium - 10041-EV-M Keeps your lower limbs snug during long periods of frigid inactivity. Micro-Grid Backer, Brushed Inner Face, Flat Lock Seam Construction. Fabric Details: Bi-Component Polyester Spandex Blend. Polygiene Technology neutralizes odor by stopping the growth of odorcausing bacteria and fungi, Wicks away moisture from the skin, Great for static hunts in cold weather.