Hybrid fabric and insulation pants, 2-layer stretch fabric over the knees and back side for full freedom of motion, 2-layer Blaser Vintage fabric over the rest of the pants, reinforcement fabric on the lower part of the leg for higher durability, stretch insulation over the back side and knees, Primaloft® Needled Gold Eco used over the buttocks and knees to reduce conductive cooling, Primaloft® Black is used for the rest of the pants, 2 top zipper pockets, upper leg side vents, 2 side zipper leg pockets, articulated knees, 2-in-1 belt and suspender loops.